Who is better at idol,nick pedro,katherine,chris daughtry,blake lewis,carrie,jordin sparks?

Out of the list of names you've presented; Carrie Underwood and Chris Daughtry are the best by far. I think this season's singers have a lot of practice and learning ahead of them. Carrie and Chris were already dynamite singers by this stage in the game and that's just because they are naturals!!!!