This post isn't made for speculation(may contain spoilers though), but it's a thought about Azrael's true strength.
If Azrael is barely using even only an eighth of his strength(according to his win quote against Kagura) against his opponents, which was enough to cribble Kagura, Ragna, and a couple of other strong characters. How strong would Azrael be in his full power? That's something I'd like to think about.
I guess we'll never know unless he manages to get out of his new prison.