What'd everyone think of Def Leppard and Taylor Swift's performance on CMT Crossroads?

I went into watching it w/ my mind set that it was going to stink, because she can't sing. Well was I surprised to see that when she is singing songs other then her own she actually didn't sound that bad. I think if she would sing those types of songs, and be called a rock/pop star she would do better. It just seems that when she sings her songs I can't stand her voice.