And I think goku has a level of strategy in battle superman doesn't. Goku could grab him, use his instant transmission to teleport sups to a planet with a red sun or at least to king kai's where there is no sun to power superman.
It really depends on which version of superman we're talking about here. There are some storylines where he's pretty much indestructible in every sense of the word. But goku and vegeta's ssjgss power in DBS makes me lean towards the saiyans.