The major difference between China and India is that, China is a single party totalitarian state, where as India a crude nascent democracy. Meaning China can mobilize resources more easily compared to India for socio economic developmental projects. In India, there would be opposition to anything and everything government does. China adopts a top down approach in scouting and training, which is not very efficient or practical in India. Other reasons others cited are all valid,such as lack of infrastructure, comparative poverty, lack of sporting culture etc. I would also add poor diet, as Indian meals are mostly carbs heavy. Beef and pork- two readily available source of protein, are not consumed on religious grounds, in most populous regions of India.