Why are only sports where black people appear to have some form of dominance the only one ever brought up in these conversations? Why don't you bring up Eastern European dominance in weight-lifting? Asian dominance in diving based events? White dominance in swimming events?
Enough with this 'bu bu but...the blacks" shit. Trying to use blacks, a group with a very clear and recorded history of being segregated out of sporting events, to make a case for another discriminated group, is down right disgusting. Fallon Fox tried to pull this same shit and it truly turned me off her case.
In regards to the point you're trying to make, the difference is that, if black people have some inherent genetic/physiological/hormonal advantage, they were simply born with it and didn't have to modify themselves. It's a benefit of heritage. That's a given in sports anyways.