It's been WAY too long since her last urban-influenced songs like Can't Hold Us Down, Dirrty or the first half of B2B.
I'd say Can't Hold Us Down is actually Urban and not Urban-influenced. I mean, other Pop girls make Pop songs and act like they're Urban, but Xtina really actually experiments with multiple genres.
Before I got into Xtina, I used to think that Can't Hold Us Down was her debut single and that's how she was before she became a blonde Pop star.
I was a teen when Christina debuted, and I didn't begin to fully appreciate her until a few years ago. I guess me being young, dumb and insecure back then had something to do with it.