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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Star Wars It is very likely that without Star Wars, there would never have been a Halo. Granted they are different stories all together, but I would speculate that the author(s) of the Halo saga were highly influenced by Star Wars from the beginning.