Just because something is not dance pop doesn't make it less generic. Stay is a slow ballad but it was still a desperate attempt to try to recreate Adele's success (unfortunately Unapologetic did not even come remotely close to pulling a 21 LOL) thus making it really generic.
Marina has literally 3 songs produced by Dr. Luke. Go look at Katy.
"I Kissed a Girl"
"Hot n Cold"
"Teenage Dream"
"California Gurls"
"Last Friday Night (T.G.I.F.)"
"The One That Got Away"
"E.T."
"Part of Me"
"Wide Awake"
Sure tonight some twinks will run naked through the forest of their dreams and screaming this is art but believe my fellow friends I've seen a lot in my life and this isn't art.
Marina didn't create a remix of a song just to feature a new artist, nor did she put the acoustics or remixes up for purchase until late after the single's release.