I have noticed that when a super-fit white girl has BBC fever REALLY bad, she will happily shag ANY black dude, they don't need to look like Idris Elba, they can look like a fucking wombat, and they'll still happily bang them, cos the lust for BBC is that high. It's mental.I think where you are from makes a big difference. Racial demographics also can play a role.
On the where you're from part. I've seen hideous dudes from shitty little areas pull some stunners. If you're on some mountain in West Virginia there's a surplus of attractive women.
On the racial side of things, black dudes have a huge advantage. Most black women have no interest in white men at all. If you're a fairly successful black man in your 30s or 40s you're in the upper echelon and can have your pick for the most part.
Obviously that last part is loaded with stereotype and generalization but there's been books written studies done, etc.