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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Note to OP; Maybe change to Star Wars SERIES vs Halo SERIES if you wish to use forerunners; Forerunners by lore existed BEFORE the universe; so technically THEY ARE [u][i][b]NOT[/b][/i][/u] originally from the Halo Universe