User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-101.160.191.17-20120522085708

You cannot make a final statement on who is stronger 'Archangels or Leviathans' because it never clearly happened in the show. People shouting Archangel>Leviathan or vice versa is all speculation, sure Purgatory might of been 'easier' or at least, 'less complex' than Luficers Cage, but that doesn't mean anything, nor lessen the strength of the Leviathan. I think they were underused in the season, they are older than Angels, man and even souls (as Death mentioned), but they are not easy to kill, as it took the word of God to explain exactly how to defeat them (or Dick). Lets stick to the Canon and stop bringing theological ideas into the mix. If we stick with Canon, than Leviatan could possibly kill Archangels, why? Death stated himself that God locked them away because he thought that they would eat every creation. When Edgar kills those two Angels, they had no affect on him with their powers (some people than say oh they were low ranking Angels, how do you know? they were part of Castiels Garrison, so they would be strong). Beheading them doesn't kill them it just slows them down, so does Borax, and as for Dick Roman; he was smiling as he dying (I think he pretty much sucked them with him). Crowley never said he killed them (remaining leviathan at the building) with his army he stated just said that they cutting their heads, remember what he told Sam to ensure that they do not regroup. As for Eve, she must be the second creation (or close to it) as she is older than Angels, The Alpha Vampire even states to Edgar that he is from them and is the son of Eve, and Edgar replies he is a mut, so not a pure Monster/Creature like a Leviathan.

Either way, I think the Leviathans might not be out of the picture for the next season, Purgatory is still in the cards (with Dean and Castiel being there), remaining Leviathans out there.

Enjoy speculating (and avoid trying to assume that your opinion is the only valid and logically conclusion...) this statement is my opinion and theory, as there is no real answer.

The Unknown...