Selena has 2 amazing singles ('Naturally' and 'Love You Like A Love Song') and then a long list of filler.
Demi has 1 amazing album (Here We Go Again) and a bunch of other amazing songs ('Skyscraper', 'Give Your Heart A Break', 'Trainwreck', 'La La Land', 'Don't Forget').
The answer is obvious.
And yes 'Skyscraper' is the most perfectly dramatic ballad since 'Beautiful'.
And yes 'Every Time You Lie' is all that Adele wishes she could be.
And yes 'La La Land' features a song structure far more effortlessly radical than all other pop girls' laboured efforts.
And yes 'Give Your Heart A Break' is the most brilliant pop radio single ever and the lyrics are incredible and it has two middle 8s, and when the latter one comes in so unexpectedly when you think the song's ending it's a pop sugar rush every time.
Metamorphosis vs Meet Miley Cyrus
Hilary Duff vs Breakout
Dignity vs Can't Be Tamed
**NOTE: Hilary's first album 'Santa Claus Lane' is excluded because its a holiday album.**
Already done
Madonna vs. Janet
J.Lo vs Rihanna David Bowie vs Prince Lady Gaga vs Lana Del Rey Kelly Clarkson vs Carrie Underwood
Adele vs Amy Winehouse
Bruno Mars vs Justin Timberlake Jay-Z vs Nas P!nk vs Avril Lavigne Beyonce vs Christina Aguilera
Britney Spears vs Shakira Demi Lovato vs Selena Gomez & the Scene