User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-203.81.71.69-20140507062832/@comment-173.33.253.120-20140520004953

If we are really relying on connecting the dots, we have more dialogues that support the Leviathan instead of the archangel. Death, Castiel, Crowley all believed and supported the claim of the Leviathan power. That's one of the most powerful beings, and a representative of heaven and of hell. So to think that 'by connecting the dots', you would logically and undisputably arrive at the archangels winning the toss up is a bit biased. Even then, I choose to think we cannot say for sure until the show itself presents the match up.