User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-86.159.50.151-20120508103555/@comment-4920092-20120508125159

I don't think "definitely" means what you think it means.

It wasn't confirmed, therefore it isn't definite. And invulnerability to angel powers is far from the same thing as as invulnerability to archangelic powers. I've said before, comparing angels with archangels is like comparing a slingshot with a nuclear missile.