Superman has the speed and mobility to a huge degree with probably around same strength due to size difference.
How would Superman handle his nuclear pulse? If that nuke put Kal down and unconcious when he was behind doomsday, those 3 nuclesr pulses could very well **** him up. They were hotter, left nothing standing, and erased a creature that was presumably nuke proof and was able to regenerare thousands of tons of flesh in seconds. Knowong that nuclear radiation hurt him like it did. He aint walkin away from this attack
Oh and Godzilla gets way hotter just existing than supermans little eye lazers ever could