Sex with a black guy could possibly be the same as sex with an equally hung white guy. But there's a lot more to it. Just as there's a lot more to sex than just having a cock inside you.
A lot is what leads up to it.... the seduction... I love the attention and I find a lot of black men to be erotic/exotic in this. The disappearing but still there social taboo concerning interracial sex..... call me a rebel :P
A lot is mental as well.... I believe in the masculinity of a black man.... either that or I've been lucky and have been either hit on or had sex with the cream of the crop so to speak
In summary..... both of you have to be comfortable with it. And if you both are for sure, let her fullfill her fantasy!
I waited till I was divorced to do it..... and now I wish I hadn't...