User blog comment:General MGD 109/Who's the strongest demon/@comment-86.14.179.170-20151113153600/@comment-9249716-20151113183927

Anna wasn't an archangel. She was either a seraph or just a regular angel that was potentially stronger than most regular Angels. Also, Alistair was strong but Castiel was a regular angel when they first fought. Against a seraph, he more than likely wouldn't stand a chance, and he damn sure would've been annihilated by an archangel in terms of raw power. Cain, before that darkness bs plot line, made sense in being the strongest as the idea would've been Licifer sharing his grace with a human (the darkness storyline was completely out of thin air when it was revealed). Alistair was a higher ranked demon but not the highest rank. And that quote about his "studies" in hell was leaning more towards his torturing damned humans as opposed to any actual knowledge.