In my eyes, the songs that shouldn't be singles/don't have much potential are:
Phresh Out The Runway - While it has good boast lyrics, the production might be a little too harsh to the common listener.
Numb - Even though this could be a minor urban hit, I feel it's too slow to be that big a hit. The Eminem feature would help it a lot though.
What Now - Ballads/down-tempo songs may be getting bigger on the charts, but I feel this lacks a certain punch that the others have.
Love Without Tragedy/Mother Mary - If LWT were extended to be a full song, I still feel it wouldn't do that well. It works really well as an album track. As for MM, it's kinda obvious that wouldn't smash.
Get It Over With - It just wouldn't be too much of a hit on any format. It's too mellow, in a way. I can't imagine people in a car jamming to this much if it came on the radio. It's perfect as an album track, if you're just lounging around, and not doing much.
No Love Allowed - The lyrics are perfect, but the beat on this song is too minimized. If it had a bigger beat, than maybe it could have hit potential.
her biggest flop single to date, so it was obvious they'd make this the next single, its generic and her weakest dance song but I'm sure this will smash 
