Oh trust me, you don't know how strong Godzilla is.
He ca withstand the gravitational pull of a black hole. He can regenerate from a single cell. He gives off a constant aura of radiation that kill you alone. If we're going off of the Shin Godzilla version, he can mutate himself and create other monsters from his own body, and there are even some hints that he can absorb other organic creatures into his body ala John Carpenter's The Thing.
Godzilla is a bit more than just a big monster.