Type it into Google. You'll find the Death Battle for it. Superman will win, and they'll use facts to explain why.

Their math was terrible...... They used way to many estimates on Goku, not counting in the training from the time he performed said feats, and then stacking SSJ on top of that...... Fatally flawed.

thaaat aaaand Goku would never go to kill superman or let the earth blow up in the process. What kind of logic is "Oh hey, kriptonite is weakening you, let's blow it up" then turns to "let's kamehameha you into the sun so you can die"...

Yeah, they also vastly overestimate his wishes to better himself vs. protect the earth. However, he did state that he could have killed Buu at 100% SSJ3...... (Not too sure about that one.)

he did state it. and he eventually mastered ss3 so it would not take any negative toll on his body whatsoever.