Ariana gets a 7 because she can do most vocal runs but lacks versatility (90% of her vocal runs are her belting "OH BABAY"), creativity (see previous), musicality (see previous), and her voice is quite thin and lacks resonance. She also needs to create her own identity which I know she's trying to do, but whenever she covers other artists' songs she always tries to mimic them (eg. Whitney's I Have Nothing, Mariah's Emotions, etc). One of the few good things she has is range, which really isn't that impressive considering how naturally high her voice is placed. She also has a good degree of control but needs to work on her breath control and enunciation as everyone else has said.