Great piece, I'm jealous.
Cthuluh couldn't even beat Conan. Conan ain't even the King of Monsters, but he whups the shit out of ancient gods all the time. And Godzilla is ten thousand times mo'bad-ass than Conan. Cthulhu ain't never fought anybody even close to Godzilla. Shit. He ain't never even fought anybody. That nigga is weak. Godzilla fights ALL THE TIME. And when he's not winning, he's regenerating. If you took Wolverine, mixed him with the Hulk, and then crossed that with a firebreathing dragon that has a radiation-breathing dinosaur for a head, and then made that whole thing 30 stories tall, then you'd have an idea of what would be whupping Cthulhu's ass.
When the asteroid slammed into Earth, it killed all the dinosaurs except Godzilla. And he was just a regular dinosaur back then. All that shit did was make him sleepy. And when he woke up, all he knew was that some muthafuckas had to pay what they owe. Cthulhu can't even get into this universe without some help from guys that Godzilla would step on without even realizing it.
Cthulhu would be all, "IA! IA! FTAGHN and shit!" while Godzilla would be all, "Fuck that shit, nigga. Monster Island, represent."