Board Thread:Warhammer 40k General Discussion/@comment-27642965-20160211003725/@comment-24510587-20160921205228

In terms of power, I think it at least equals the DSI (though I'm not sure about the DSII). However, the Planet Killer is far smaller (obviously). While this means that it doesn't have the several thousands of smaller weapons the Death Star has, it does mean it's much more agile, and it can't be targeted by the DSI, as it can only target planets and other large stationary objects, meaning that between the Planet Killer and the DSI, the Planet Killer would definitely win.