well a lot of factors r involved here,sure not only Su-30mki but also Mirage-2000 mk2 and Mig-29 can penetrate deep into Chinese land and move to their high profile targets.
But neutralizing the entire Chinese SAM batteries is not an easy particularly which is so high in number so therefore i conclude reaching Beijing is virtually impossible
On the other hand number matters a lot,Chinese airforce is 3 times bigger than IAF,moreover if have some of top class fighter's mentioned above,then we also have platforms which r obsolete like MIG-21 and MIG-27
Moreover we r also facing force depletion,though it is not a long term problem,we have our money invested in atleast 3 different fighter programmes and lot of other purchases which include strategic airlifters,AEW platforms and mid air refullers
Anyway PLAAF is also one of the dedicated and strong air force so in future also i think Indian planes intruding deep into china is not a possibility
But in future,if any kind of conflict arises,the war is not going to happen above the skies of Beijing or Delhi,the war will b b limited ,fast and will b only fought in the border areas
I think we need to try our best to avoid a Sino-Indian conflict cause that will be hugely disastrous to us to say the least. I will try to list many points here which are actually ground realities:-
1. The foremost and most important point, You mentioned that any future war will be fought on the border areas. I think you are mistaken between a skirmish and a war. Sure Skirmish is in border area like 1962 India-china skirmish but a war is by definition not restricted to border area.
Future war most likely will be fought over in:
a. Nuclear way - Using Missiles, aircraft(highly unlikely), SBM, Satellite Nuclear attack
b. Cyber and technology warfare
I think in both counts a. and b. China is far - far - far ahead of India. Its number of nuclear warheads count more than 4000 (at least) while Indias nuclear warheads is between 50 - 100.
Second disadvantage for India is that India is 3 times more densely populated than China and India is 3 times smaller than China. So China is far more capable to surviving a nuclear strike than India.
In terms of Satellite technology, again china is miles ahead. In terms of Cyber warefare China has amazing progress in IT, High tech software etc(China has its own Facebook, Google etc) while India is merely a back water Outsourcing gaint with Infosys and others offering only "Software services" and no high tech R&D.
2. In terms of number of Aircraft, again the count of number of MIGS, Sukhois, F-15,F-16 does not matter because even if you have 2000+ planes they can be wiped out in a single day of airstrike ...WHAT really matters are 2 things:-
a. Indigenous technology to produce Aircraft quickly. I think again here China beats India a long way. China already has manufactured 5th generation stealth fighters while Indias LCA (3/4th generation) having 80% of western components is a mega failure .
b. Manufacturing capibility- again I need not discuss this as I have already said that it is not worth comparing.
The problem with we Indians is that we grossly over estimate our capabilities with the media and US western media shouting "India superpower" etc.........There is no frank assesement of ground realities among the Indians.
At Best we are a small regional power and at worst we are not even a power to reckon with anywhere.
I know most Indians will not agree with me.....anyway let the comments come.