The weapons arent there to kill whoever/whatever is harming the planet. Theyre there to whipe out everything on the planet whenever it is threatened so then the planet lives and all threats will be gone.
Actually they were created to defeat jenova, but by the time they were ready there was not a threat anymore. They lie dormant awaiting for the day jenova returns.
But there is a line that suggests they destroy everything. Not sure how that works.
Last edited by seiferalmasy2; 10-06-2009 at 07:53 AM.