Spot on, skin colour / genes / ethnicity has nothing to do with being able to succeed above others. What does predispose young african american men to underachieve is the example set by their fathers, if they know them.
Baby boomer generation has been very busy effing up gen x and y...
And, not all Africans and Black Americans hate one another. And no, many Black Americans are not jealous of Africans who come here and do well. Many immigrants come here and do well, but ask Africans why their countries are effed up, and they can't give you a straight answer.
Also, many Africans look down at Black of the Americas because they are not pure. Why do you think Vic Richards said what he said about Ronnie Coleman?
Also, African men tend not to like taking orders from women....don't like women bosses.