Stegodzillas is a tough character. He was able to go up against Godman after all so it’s not like he’s a pushover. That being said, he stands absolutely no chance against Godzilla. Godzilla is known as the King of the Kaiju for a good reason after all. With a single Atomic Breath he would be able to absolutely incinerate Stegodzillas. This guy isn’t quite fast enough to dodge either so that’s game over. Godzilla wins.