Christina Aguilera isn't an artist like Adele. Christina is part of the "machine" and is commerical. Ever so tacky, she even pimped her perfume with product placement in that one classless video of hers. Adele? Not so much. She has class and doesn't need to exploit sex to sell records. Her records are about the music, not to mention she has control over her voice (and melody).

Christina conveys herself to be a tramp as she sings too many tacky songs, such as "Woo woo." Her vocal gymnastics have been overdone. And her recent collaboration with Maroon 5 ("Moves like Jagger") is less than stellar.

Let's not forget Christina's well known reputation for being a nasty bitch in the music industry. She is just another narcissist who can definitely carry a tune, but she has no artistry. She does, however, have an inflated ego (which is why she oversings so much).