I'm honestly split. Megalon has more firepower, but our monke boi is smarter, is way more resourceful, has an axe that can absorb Megalon's firepower, and Kong could just hit the grenades right back at Megalon with his axe or absorb some of the impact, plus Kong is faster and more agile. I would say Kong if he had his axe, but Megalon if he didn't.