Power levels variate much in Marvel.
Most, I think, in a case of Thor. You se him battle these otherworldly beings
And tuen a next day, getting his ass kicked by Iron Man or somebody else.
Thor kills Bor, who co-created the world and then has trouble with some
Falvour-of-the-month avengers group...
What do you think about Rune King Thor in Siege: Aftermath?