Jackie Evancho already has an album and is in the finals??!?

I don't get it! Jackie already has a debut album, Prelude to a Dream, but she's on America's Got Talent! I think her talent is amazing, but one out of the 3 other contestants in the finals should win because she already has her dream. She's already gone somewhere with her singing! Ugh, I just don't get it... does anyone else?