I try.
Indeed.
But not due to race.
Perhaps... but I would say that they are more likely overwhelmingly mixed heritage.
Which is another reason that race is an invalid concept outside of it's existence as a social construct.
Actually, if you study the history of the slave trade, the people chosen were not chosen due to physical traits. They were the people that were grabbed by more powerful neighboring tribes/ethnic groups and handed over to the slavers.
Slave owners didn't practice "selective breeding" with their slaves... in reality slave owners and their lackeys who oversaw the slaves provided a good deal of parentage to the new generations of young slaves. Every well documented slave owner has been proven to have several of his own children living as his slaves. Thomas Jefferson is a classic example.
Not between races. Sure if you limit it particular ethnic groups and exclude anyone who is of mixed ethnicity (tricky to be sure) you might get such numbers. But that would be heavily massaging the data.
Or are you suggesting that African-Americans are a different race from the Baka? (Except for the African Americans who are also Baka.)
No it isn't. For example the 2010 US Olympic Winter Team was something like 95% European decent.
African-Americans certainly dominate in many of the popular televised sports but that doesn't mean they are over-all better athletes than any other group.
wa:do