Originally Posted by
Ryll
I would even say it was only by luck that Sora and Shiro managed to win, because they really had no idea physics worked the same way it does in their world that it does on Earth. That is until you recognize that when he called the H-bomb and it went off, it proved many things, not just what they said in the episode. It proved they could use words their opponent didn't know, could call things from their world and not in this one, and that molecules and atoms make up this world instead of something else like sprites or aether. The physics of both worlds matched. They still kind of gambled that the planet had a mantle and core. It could have been made of cake or cheese!