Originally posted by NemeBro
There is no evidence of this claim.There is even less evidence of this claim.
Neither have you, you've just projected your own ideas onto him.
This is not true.
In a considerably weaker setting than Marvel.
Thor at his classic levels would also easily one-shot the monsters Saitama does. The most the majority of powerful monsters (Dragon level) cap out at is about city busting. That is far beyond quite a few of Thor's feats.
Current Thor appears to be much weaker, but Thor with Mjolnir is packing more power than Saitama has ever been shown to possess, with the only thing against him being that he has several bad showings speed-wise.
Quite to the contrary. I'm not projecting my own ideas on him, I'm specifically going by what's been said in the series (e.g. by the lead scientist of the House of Evolution) and outside of the series by the creator.
Of course, it's NEVER possible to prove that someone's strength is infinite; we just have the in-series claim that he is without limits. But there hasn't been anything to contradict that so it's a good hypothesis at this point.
In contrast, whenever there have been claims about someone or something being invulnerable, unstoppable, unmovable, etc. in MARVEL, it has been proven wrong.
Thor has been shown to have limits. Thor has lost to monsters and villains several times. Saitama hasn't. He has lived up to his hype thus far. And, I have full confidence he will continue to do so. That's the writer-stated point of the character.
BTW, a character's powerset IS defined by his creator / writer. So you are wrong there, too.