WTF are you talking about? Do your research on music and you'll find that Christina's performance for James Brown was one of the best at the Grammys. Not only that, she sung how it was suppose to be, look at James Brown ..he too did "scream". If anyone can tackle Whitney, Mariah, Patti LaBelle etc then it would be Christina. Just b/c she messed up the Anthem due to her being nervous (look at her rehearsal, she knew the words) does not mean she's lacking vocally.