Aight, fair take, but lets be real here, I think GER could stalemate both of them and The World over Heaven could probably beat base Goku at least maybe even forcing him to use a Saiyen.
So i think goku and saitama will just make a draw as goku will probably see how weak saitama is compared to him and pull some light punches and sees that saitama is getting stronger with each punch and he WILL let saitama get up to his potential Cause that mf is dumber💀
Literally the fight would be non existent as both fight gods and demons alike if anything they'd teamup against a common interest especially if it's young Kratos we're talking about since older Kratos doesn't want to fight anymore but will if he has to