i don't think nick or joe would win american idol (kevin just...doesn't count) and i don't get goosebumps when they sing (and when i see them singing on tv i hold my breath) but they're not marketed to be amazing singers.

christina, jennifer hudson - they're marketed for their voices. very few singers these days can actually sing well.

these kids are marketed for their performance skills...just like britney was. and one thing they know how to do is put on a show.