Yeah, but two things: Carnage was a serial killer maniac, not a protector of Earth. Also he only did it after he experienced the feelings and desires of the symbiote. He was scared and didn't want to allow that creature to hurt anyone. Loki isn't 'below' Surfer, he's much more intelligent *he manipulated him.* He doesn't wield the power Surfer does, but again, he's much craftier.
I don't know what I would call Surfer. 'God-like' I guess, since he's not technically a god. He is immortal though isn't he? Galactus is 'god-like' as well, though I imagine he's a 'god' somewhere in the cosmos. Surely someone worships him. Odin isn't above Galactus, of course not, he's just capable of hurting him and sending him home.