I dunno. Both are very talented players. But I dunno what they can do to deal with Serena's power? Maybe more muscle could help them absorb her shots better but idk. I like Radwanska in WTA also, but I don't see her ever winning a Slam unless Serena loses early
If she had the power of sharpie and the amazing returning of vika than i think she will be able to outsmart her. I still have faith that Aga will win a slam. Her gamestyle is just too good.
I use to think that she was so annoying at first but her game grew on me and i started to like her even more.