People forget too that this is just a thrown together cover that she probably learned and rehearsed in a single day. It's not an awards show, it's her concert. It's not meant to be some kind of perfect production. It was a fan request and she does a different song every show.. I'm sure if Kelly really put effort into it and wanted it to be perfect, she would. She's just having fun with it.
I mean, when will other gorls have the balls to cover a different song across all different kinds of genres every two days? She deserves credit for that alone.