Mecha Godzilla 2 has a lot of ammo at his disposal to use against Sin Eater. Sin Eater’s got his guns with him, but in the end it won’t be enough to stop Mecha Godzilla 2. Mecha Godzilla 2 is a lot bigger than Sin Eater and one good shot should be enough to take him down. Mecha Godzilla 2 wins.