I don't think it's weird as such at all, I'm white and male and, a bit reversed, find the thought of white girl challenging black girl but getting totally humiliated by her really hot - not sure how weird that might be even - but when you phrase it 'putting them in their place' it sounds like simply putting black people in their place. I believe you don't mean it like that but it can easily interpreted that way.
But difference in race, age, etc can give extra spice to everything, that alone isn't weird.