One has to look at what the BJP is to understand Modi. The BJP is the first Party in India which is based on capitalist ideals, or rather it is an odd sort of mirror to the republican party in the US. Religious, Capitalist and right wing. Just as with Pakistan and its establishment, there has been an "establishment" in India as well(although not in the strictest sense of the word as with Pakistan). This "establishment" or "think tank" within India has maintained its consistency of policies when it comes to foreign affairs with the world; in India's case that has been non-alignment in the strictest sense and a more looser connection with the Eastern bloc namely Russia. However, the BJP is a party that has now returned with major funding from MNCs in India. MNCs that look for business and support policies that support business. This then blends with its earlier right wing or religious basis to form what is as stated earlier, a more rabid yet more fluid mirror of the republican party.
lets come to Prime Minister Modi, to take Modi on the basis of just his development in Gujrat.. or his alleged role in the Gujrat Massacre is injustice to a proper analysis of the man. As I stated elsewhere, his beginning and his political history are an important clue to what he intends to due in the future. First and foremost he is a politician or rather a political businessman. His focus will be first to ensure that his "firm"(in this case his party and his seat) remains intact in the playfield. This means making sure that his core business or core product stays intact for the market; here it refers to his two main themes on which he has risen since he started out:
1. Concrete Development and Progress
2. Assertion of Hindu religious/cultural superiority over other Indians
This is the core product Modi has been told/adopted to sell. Now, what other ventures come after these?
3. Expansion of Relations and Business contacts for votebank and investors(donors) on an international front. This refers to international relations and if taken in analogy to Business means capital(diplomacy) to invest in a venture.
So now, we have 1 & 2 to get the Business into the market(which it has) and 3 being a greater expression of the "firm"/CEO.
When it comes to 3, the CEO/PM is focused and open to all avenues which includes existing and emerging markets, by existing we have Russia, Europe , Japan and emerging is the US,China and so on. Again, when I refer to "Business" I am not restricting myself to monetary interactions but those also on the diplomatic and tangible/intangible gains in international relations.
As I mentioned before, the CEO/PM may have ideas but these still need approval by the board and the shareholders. In this case the Board is the Party and the Shareholders are the campaign donors(and NOT exactly the many internet warriors here and the millions who voted to think they actually chose what happens to them). The Party has various leadership and power players who have their various interests and their own "visions". Some of these visions are tainted by a misplaced sense of religious supremacy while most other visions are based on what meets their versions of 1,2 & 3. These visions then influence their approval/disapproval/suggestions to the PM who then weighs the implications/effects/causes(etc) on his "Business" and his own seat. This goes onto what India does, vis-a-vis its actions via China or Pakistan or the United States.
When it comes to China, the CEO/PM views it from two angles(as with all markets): There is the monetary(business) gains and then there is the diplomatic/IR gains. For the former it is an existing(but still highly unexploited) market and the latter is an avenue that has both positive and negative potential. While investment has already been made in the former and continues to grow, the latter is still being debated in forms of "investment". Here the CEO/PM is now burdened down with his donors and their opinions along with that of his board; since they have been invested in by the Americans and their MNCs/Government. So the question then pops up whether the RoI of China will outweigh the current "income" and RoI from the Americans/West(Japan included). If it were up to Modi IMHO, he would like to reap the benefit from the Chinese on an equal footing but first reach a level where India and China are considered equal economic/military/diplomatic powers. At the same time, he wants to ensure that the West remains dependant on India for its various needs and more so wishes to see India replacing China for meeting the manufacturing needs of the west. That means that while on one side India wants to Profit from China, it also wants to steal its Business. Yet, there is also a realization that a potential settlement of the China-India dispute may allow the formation of a loose Eastern Bloc that may genuinely challenge the west for presence in the Asian subcontinent and essentially push them back; something that remain a closet dream of many of the mainland Asian leaders. However, here the "visions" of the board come in and the influence on them via their backers and ideals which at the moment seem to push the PM/CEO to focus his alliances with the west and in a rather odd change over the 68 years of Indian history.. tilt India towards the western "camp"(if ever so slightly). Moreover, while the PM seems to be resisting this; the "board" of India in contrast with the long term established thinking of the Indian think tank wishes to make India "dependant" on the west both in Business and the intangibles. This tilt has also started effecting the Indian think tank.. in other areas as well to which I will focus next.
Lets come to Pakistan. As a good friend and original implanter of this idea pointed out.. if anyone wants to know what the current stance or rather new "core" stance of the Pakistani establishment is.. one needs to look no further than Musharraf's various "sudden" press interactions in India following his step down in 2008. Whatever he said can essentially be interpreted as the Army/ISI/Certain Bureaucracy a.k.a "the establishment" speaking to the Indian government/Think Tank and people as to what they want in terms of future India/Pakistan relations. This initiative was reciprocated by the Indian side as well, despite 2008 and the LoC incidents these small interactions at the secretary level.. even lower kept going on slowly. It could be observed by those looking at the right places that while elements on both sides who still had their grudges bottled up kept shooting words and bullets at each other, the realists were quietly talking.. directly/indirectly.. even through gestures.
Come the rise of the BJP and its 2nd core ethos.. something suddenly changed. First, the Indian population which was not radicalised or rather "Rabid" in its stance in general towards Pakistan turned around to becoming almost downright bloodthirsty.. and then, the Indian "Think Tank".. which was moving towards rapprochement suddenly fell silent.. and now seems to be replaced by much more hawkish ideals. In it comes Modi, who is riding this wave. But then, we also forget that we are looking at a man who goes by 1 & 2. So for him, whilst he is being pushed by 2 he also has 1 on his mind; and point 1 benefits or goes faster with peace on the western border. Yet, his attempts at point 1 are inhibited by his image due to the 2002 riots in Pakistan and the implications of dithering from 2 which ensures his seat.
So what you have eventually with Pakistan is the overriding evidence that profit for Modi is greater from following 2 and ignoring point 3. Until the profit from point number 3 exceeds the risk to point number 2, you will continue to see hardline policies against Pakistan upto near war and the Indian public will swallow this hook line and Sinker because they dont know better(like most drones on social media and otherwise). In Pakistan Modi will continue to be painted as the next coming of Count Vlad because that is "trending" and hence everyone has to follow it. This public sentiment gets triggered by all those looking for their respective points 1,2,3 and so on.
So to the original question of whether Nehru was smarter than Modi I would say this. Nehru had his own 1,2 and 3 and in executing those 1,2 and 3 he was very effective in general. Modi so far has been effective with his 1 & 2 but we have yet to gauge 3 on a timeline beyond Gujrat. What will be the final benchmark will be whether the benefit to Modi of his 1,2 & 3 aligns with what was best for India 30 years down the line.