K results ARE numbers lol (sorry the all caps bit is easier to read on highlighting but yea) And second: Self repair and sustaining [b]is[/b] maintenance and repair. The death star is manned by a self contained crew that repairs and maintains themselves and the station. The death star [b]is[/b] incredibly shielded. Not saying the halos [b]arent[/b] more effective weapons, just that the reaction which kills its targets [b]produces less[/b] energy than the reaction used to destroy a planet. Numbers aside e=mc^2 is [b]still [/b] true! Biomass greater than 1mm in whole galaxy is [b]still[/b] less mass than an entire rocky planet. There fore the reaction wiping [b]all[/b] life in the galaxy out [b]is less powerful[/b] than the reaction required to destroy a rocky planet. As far as the rest go; Even that [b]more powerful reaction[/b] is [b]nothing[/b] compared to the force. But yea; halos [b]were built[/b] by a more advanced race. [b]of course they are more high tech[/b]. Which also is further confirmed by them as a more [b]effective[/b] weapon. How ever by [b]sheer power[/b] the death star beats it flat out with the reaction it's super laser produces. (I use caps instead of bolds mostly due to tiny phone vs huge hands)