Consider what the full and true job description of a college coach might be. Is it only coaching the X's and O's? or is it also the perceived off-field leadership stuff that many parents and recruits think about?
If the full job description includes the ability to successfully recruit among various social, racial, and cultural backgrounds, and if being a member of a minority group improves your ability to recruit, would that not be part of being "the best"?
We can wring our hands and deplore all day long the apparent but very real tendency for many (certainly not all) minority families to want to have someone from the same background to be part of the coaching staff, in hopes that this person will serve as a mentor and role model for their son/ daughter. But if in fact this is happening, it is certainly fair to say that those who have better success rates in recruiting minority athletes have a higher qualification for the job.
Recruiting is like sales: good salespeople, who can document that they are more successful in sales, get higher salaries, and why not? So if recruiting (= sales) is part of the job of coaching, successful recruiters should be considered as "more highly qualified" as coaches than those who can't bring in top-notch recruits.
Which kind of gets us back to the whole Jay Graham thing: was he a minority coach who failed to deliver in recruiting, especially minority recruiting? If so, he might have been great with the X's and O's, but not so great in the recruiting area, and therefore, he wasn't as good of a coach as many of us thought he was. --just a thought.