I have already explained the reasons for it.
The first and biggest reason is that when India transitions from a HDI of
0.64 to 0.8+, India's GDP
will be growing at well over 8%. No country in the world that has transitioned from
0.7 to 0.8+ has done it in an era of very high growth. They made the transition with very slow growth, well below 5%.
Second reason is the heavy focus on rural upliftment when it comes to healthcare, power etc.
China achieved 100% electrification in 2015. China was a $10+T economy by then.
https://www.chinadialogue.net/artic...rt-to-bring-electricity-to-1-4-billion-people
India
will very likely achieve 100% electrification by 2019. Probably not even worth $3T by then.
https://www.firstpost.com/india/nar...th-aim-at-2019-general-elections-4081275.html
The scheme is expected to electrify all rural households across India by 31 March, 2019
There's Modicare as well.
http://money.cnn.com/2018/02/01/news/economy/india-modicare-healthcare-program-largest/index.html
The government said Thursday it plans to cover hospital treatment costs of up to 500,000 rupees ($7,800) per year for 100 million "poor and vulnerable" families.
The government is already trying to bring healthcare closer to rural Indians by establishing 150,000 "health and wellness centers," a separate program to which Jaitley allocated around $190 million in the budget.
The insurance cover will pay for secondary and tertiary hospitalization as well.
So this is stuff we are doing in India long before China is. So you can imagine how quickly India's HDI will grow in comparison to other countries. Especially when healthcare access is easier and children can study at night because of the electricity.
China has to climb up from a HDI of 0.73 to 0.8+ with a slowing economy and aging population,
while India has to climb up from 0.64 all the way to 0.8+ with a far younger and very fast growing economy. You see, it's simply not the same. And you can't compare India to any other country in the world due to these advantages.
India's HDI is going to ramp up really quickly in a really short amount of time.