Superman's speed and versatility overcome Godzilla's incredible size and durability.
Godzilla is the King of the Monsters โ 400 feet tall, nuclear-powered, essentially indestructible. But Superman operates at a tier where even kaiju are manageable.
Superman's speed is the decisive factor. Godzilla is powerful but slow. Superman can blitz at lightspeed, delivering planet-shattering blows from angles Godzilla can't defend. Heat vision can match or exceed atomic breath in temperature.
Godzilla's durability is the main argument โ he's survived things that would destroy Superman's lesser opponents. But Superman has moved planets, survived the center of a supernova, and has strength feats that rival the most extreme kaiju scenarios.
Godzilla's atomic breath, nuclear regeneration, and 90,000-ton mass make him an incredible threat. His durability has survived things that exceed most of Superman's opponents.
Superman's speed lets him attack from angles Godzilla can't defend. Heat vision matches atomic breath. Planet-moving strength can physically manhandle even a 90,000-ton kaiju.
Superman wins through speed and versatility. Godzilla is one of the most durable beings in fiction, but Superman has the tools and the speed to find a way.
Godzilla also fights
Superman also fights