Come on now Nitro, we all know you can find an exception to any rule. We're talking about populations here.
You would seem to be advocating that intelligence can come through despite any disadvantage in childhood? Do you (or would you if you don't have any) send your kids to a crappy school if there is a better one available? Do or would you ignore them when it comes time to do homework even though you could help? I mean if Ramanujan could do it then why not your children?
Obviously I'm engaging in some hyperbole to make a point here, but just because we can point to a token kid (or even 5) who did well despite being disadvantaged doesn't mean that wealthy kids in general aren't going to score higher than poor kids, in general, on standardized SAT/ACT/IQ tests.