Who wins?
By entire, I mean EVERYTHING. Halo, for example, would have all of the Precursors, Forerunners, Covenant, Flood, and Humans all teamed up against ALL the Star Wars universe
They all have their technology as well. Halo has their Halo Rings and such, Star Wars has all their Star Destroyers and Death Stars and all that
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Jedi and droids. An unimaginable amount of droids. Not to mention clones. With all the different species and different aliens in the start wars universe, halo doesn't stand a chance. Just the amount of droids the star wars universe has already makes this an unfair fight. Star wars all the way.