The intent of my original post was to check anil's assertion that, "china is several decades behind when it comes to "nation building", as he asserted that China's history with secessionists has seen more turbulence than India ("eventful" vs "uneventful"). India's political history too has been very volatile. Heck, India almost became a full dictatorship in the mid '70s.
One advantage I will hand to India over China is that it is a democracy, albeit with authoritarian tendencies, but still a democracy which gives space for dissenting voices to be heard. This allows an alternate channel for a lot of simmering tensions to be released.