User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-190.92.7.204-20150612220839/@comment-5961531-20150613113413

No chance. Cain's power was from him being an exceptionally powerful Demon in the first place. The only powers the Mark granted the wearer was increased physical attributes and telekinesis, which Cain had in the first place. The only power the Mark granted that Cain didn't already have was immunity to death. That alone however doesn't put him above an Archangel, not even close. An Archangel could dance rings around Cain for eternity, but they could never kill him. There would never be a victor.

P.S. I don't actually rate Cain the highest on the Demon hierarchy. For the little he's done, he has far too much hype. I honestly think Lilith was above him. Definitely in raw Demonic power anyway.