SCP has that one that literally just can't die because it says so. Even when the story is rewritten it denies, even erasing it from the story has it just put itself back into it. It will not die because it just cannot.

"Except for gods"

So don't count mythology

Gods count

I meant excluding characters with the power of LITERALLY god.

^No fictional character has the same amount of power as THE God???? (Assuming you're talking about the Judeo-Christian one)

The One Above All

The Presence

^They aren't as powerful as God.

The Presence has limitations, his power is constantly varying between story-to-story. He is not omnipotent in the truest sense.

TOAA has been undergoing a heavy amount of scrutiny both in and out of the story currently. As of the current Hulk run, his position in the Marvel Multiverse has been called into question. It's to the point he might not even be the creator anymore.

In any sense, neither are actually omnipotent even if you took them at their best. Ultimately characters are still bound to the whims of what authors want from them, and therefore are not even close to being as powerful as the Christian God.

I'm not even religious, this is just common sense.