Fun Fact: With Goku's attitude, Superman would always win against the Saiyan warrior. Superman will always be stronger and has infinite power. It's just how he was written/portrayed. Also, Goku is one that doesn't resort to dirty tricks, so Goku would never use Kryptonite or anything against him.
Remember when Vegeta said he would kill Superman faster than he would kill Shadow? That's actually something that interested me. During the scene from the first fight where Superman crashes into LexCorp, Goku intentionally destroyed the Kryptonite so they could have a fair fight. Vegeta would've just taunted Superman and killed him on the spot, and since Superman isn't Semi-Perfect Cell, he wouldn't have manipulated Vegeta's Saiyan Pride against him. Therefore, Vegeta would've won only and if only that scenario happened.