She does ballads better because she's kind of a pop-rock artist. Not really rock but you get what i'm saying, she never really did songs like Can't be tamed until now, so this is new for her, the whole dancing and singing at the same time thingy.
Performance-wise it was good. The vocals were not good, she's so much better than that- I know she will improve though, this is a hard song to perform but she will pull it off.
AGREE 
