User blog comment:General MGD 109/Who's the strongest demon/@comment-4628856-20130721224336/@comment-1509826-20130722204251

I'm unsure, don't forget it was Azazel who gave him his powers in the first place, sure the demon blood supercharged them, but even before he started taking it, it still made him immune to Liliths most powerful attack. Its also possible, they stopped developing because Azazel died. You might be right, however I still belive Azazel could be stronger, maybe its because Lilith never seemed anywhere near as powerful as him onscreen, once you got past her first impressive trick, she didn't really have much else left.

Archangels, sure they can kill anything, except horsemen and god. I don't know, Seraphs are very powerful, but then I think maybe the top of hells charts might be able to stand up to them, but in the end the seraph would win as demons can't kill angels, thus unless he knew Alastairs exorcism spell I don't think he could do much.