User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-5120709-20120529162257

I think Archangels are a bit more powerful, but the Leviathan are more dangerous. The Leviathan are supposedly always hungry and would have eaten everything, but the writers didn't do anything with that.

The way I see the Archangels and Leviathan is like Majin Boo's forms, from Dragon Ball Z. Boo's other forms are more powerful than his original form, but his original form is so crazy it's actually his most dangerous form.

So while the Archangels may be stronger they are intelligent and prefer not to do much on Earth, Leviathan just eat, eat, eat without caring and are a bigger danger