why goku would beat superman

It's really hard to say. Goku has his Super Saiyan forms which give him incredible power and speed. But Superman has his own set of powers like super strength, flight, and heat vision. If they fought, it could go either way depending on the situation and how the writer wants it to end.

It's highly unlikely. Goku has insane powers and combat skills that Optimus might struggle to match.

Yes, Goku manages to defeat Jiren in the manga after an intense battle and showing great determination and growth in his powers.

I don't think Manga Deku could beat Goku. Goku is incredibly powerful with his various transformations and fighting skills.

It's hard to say. Both Luffy and Goku are incredibly powerful in their own universes, but their powers and abilities are quite different.

In the manga, Gohan never managed to defeat Goku. Their battles often ended with Goku coming out on top or the fight being interrupted for some reason.

In my opinion, it's highly unlikely. Goku has mastered multiple forms and techniques that give him a wide range of powers. Saitama's one-punch style might not be effective against Goku's diverse skills and battle experience.

Sometimes he does, depending on the specific comic storyline and circumstances.

Yes, there have been instances where Supergirl managed to defeat Superman in certain comic storylines.

Yes, in some comic storylines Batman has managed to outsmart and defeat Superman.