Have to say that I've seen women of all races have these kinds of attitude.
Hell, even my own Wife, who is usually a loving considerate person, has been known to get ticked off about her food order being screwed up. This I understand as we tend to go to the same places fairly regularly and she is very particular about what she wants, how she wants it and takes the time to make sure that the wait staff understands exactly what she wants. So when it comes out wrong ....
Maybe it's a regional thing, we are in Los Angeles and we have a lot of Black friends, most are women and most of them are very sweet. There are a few with 'tude, especially toward men, but that's mostly because they've been screwed over at some point and there are only a couple that I can say are truly self centered bitches. However, I see the same thing with the Asian, Latina and White women we know as well.
It is unfortunate that some women can be that way, but I don't see that it's a racial thing. Bitch isn't a color.
Oh, it ain't necessarily a gender thing either.