It's a good question, but it also needs some control.
Consider this question for example; "Why are there so few
Oromo winners in cross country skiing?" (For those that are too lazy to click the link, Oromo is an ethnic group hailing from Kenya/Ethiopia)
Should one assume that the more typical heritage for such a winner (Northern European/Germanic) is on average physically superior to an Oromo person? Should one assume these Northern Europeans are specifically chosen by God?