Right now it looks like they may be responsible for a 40pt IQ advantage for the Chinese, and a bit less of an advantage for Europeans.
Very slight small men mainly from East Africa have dominated long distance running, and I believe they have a physical advantage.
More muscular blacks have dominated sprints, again I believe in part due to physical advantage. (Increasingly also evident in basketball, football, soccer (futbol) and to some extent even baseball.)
Fortunately sports are free of “affirmative action” and therefore we can readily make these observations.
Similar to physical capabilities, I believe the same racial differences are very likely in mental capabilites, in spite of liberal-feel-good objections.
Thomas Sowell even objects, and I sympathize with his desire that it not be so, but he alone doesn’t convince me.