then think about it logically. covenant would glass everything UNSC would nuke everything flood would infect everything (and use the infected against the enemy) forerunners would wipe out all sentient life in the galaxy I don't know much about the precursors but I've heard they're basically more powerful versions of the flood and the forerunners. also Spartans basically won the covenant human war single handedly. with all due respect, what does Star Wars even have? a Death Star that can probably be glasses/nuked faster than a real planet.