I tend to believe it is more of a cultural thing than a race thing. Though it is not hard to say that certain traits and instinctive behavior are hereditary. Also people tend to gravitate towards what is comfortable and acceptable according to societal norms, even if that means fulfilling stereotypes. Anyway, in before the lock.
I'm going with "po gear ho". It's not a race thing, definitely cultural influence. I believe if you put an equally talented caucasian in the same environments from birth, he'd play the same way.