China will reach to the top before becomes an aging society,that will enable China to drain low income labors from around the world like most developed country do.India is the other way around,no people will stay young and wont age forever,when India's population reach to the peak,the country is still a poor developing country,that will cause mass unemployment and the country has to struggle to feed ,accomodate and educate a incredible number of people,that can spell social unrest.and further more,when those people get old,it will require tremendous money and resources for their pensions,medicare....