Burger, you're saying something different than the OP (and hence, different than what tghw was criticizing). In "all probability" the location won't be China or India, as those two countries alone don't represent a substantial majority of births.

So your point that those two have the highest birth rate isn't responsive to tghw's point that those two alone don't represent the majority of new births. So if we had to bet on "one country", a person would pick one of those two. But when we're betting "India/China or somewhere else?" the smart money is on "somewhere else".