Those studies are deeply flawed because they pressupose that the average black college graduate is as prepared as the average white college graduate, or that race does not predict performance controlling for educational attainment. When you look at the results of the National Adult Literacy Survey, it immediately becomes apparent that that is not the case.
Those are flawed studies, as different names is as much a class distinction as a racial one. Even if it were true, however, a white candidate will on average be better than a black candidate with the same resume, because the white candidate had to pass higher standards to get into the same university.