User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-3481504-20120516180343

Even though they're younger than the Leviathans, Archangels are stronger and more intelligent.

1) Archangels are effectively immortal, nothing but their own blades can kill them, or God or Death, the nature of their immortality.

2) Archangels can pown (own) Deities (not God or Death, though. Obviously), as clearly shown with Lucifer in "Hammer of The Gods", proving their strength.

3) Archangels as mater teleporters, can go anywhere in the universe, Pluto, Earth, to alternate realities, whereas Leviathans are incapable of performing that.

4) Molecukinetic, they can intrinsically destroy beings (humans, other angels), or can cause them to bleed, or etc, by physical action.

5) Holy White light, which comes from their true form. Raphael was able to make Cas puke blood, Raphael was able to destroy a band of both angels and demons.

6) Archangels can overpower angels, seraphs, deities, monsters, and everything else but God or Death.

Now Leviathans would have the slightest capacity to put up with an Archangel's power.