Exactly, if you put it another way, it's a highly self-selecting group. They are well educated, highly motivated and driven, and are so focused on "making it" whatever that means, they are willing to move to a foreign country that has the promise of being "better".

My wife's parents fit that definition, and interestingly, all her uncles and aunts who came to America are over-performing here in America, and all the ones who stayed are underperforming in Asia.