You are right that India is something like 2 orders of magnitude behind China, and that their Olympic performance was horrendous. However, 4 medals is actually

You are right that India is something like 2 orders of magnitude behind China, and that their Olympic performance was horrendous. However, 4 medals is actually an all-time record for India, a 33% improvement from last time and I believe only the 2nd time India has had more than one medal! 2 of the medals came from middle-class athletes, but the other 2 came from people born in remote villages. Things are improving, albeit extremely slowly.