what is DG? and what is OP?
And i agree about Goku just being powerful and nothing more. the thing is tho, Superman is the same. He isn't exactly known for using his brain noodle a lot. i mean, he's not dumb, but he isn't a genius or tactician either. if this were Gohan vs Superman it would be a very clear "Gohan" since he trains mentally and is a lot more aware than Goku or Superman is.
Gohan is somewhat similar to Jiren in that aspect. and didn't you see the Gohan vs Goku fight? Gohan was shitting on Goku without going Super Saiyan 3 or anything while Goku was in his Super Saiyan Blue form. Goku had to use Super Saiyan Blue + Kaio-Ken to wreck Gohan.
So, the argument of Goku vs Superman isn't exactly putting the 2 best of each world against each other. When Gohan gets his Super Saiyan white transformation (which he will) he will be even more powerful that he already is.