Board Thread:Monster Discussions/@comment-24181246-20150225052755/@comment-25285745-20150227203617

Kiryu was able to kill Destoroyah because his most powerful weapon happened to be Destoroyah's biggest weakness. Kiryu does not possess a weapon that would be guaranteed to kill SpaceGodzilla. In Godzilla: Ongoing, the Absolute Zero did immobilize SpaceGodzilla long enough for Godzilla to blast him to kingdom come, but without Godzilla's help it wouldn't be enough to beat SpaceGodzilla, especially if he used his forcefield to block it.