Who would win a war between Halo's Covenant and Star Wars Galactic Empire?

It really depends on the Star Wars time line. In the beginning of the Empire, the Emperor still controlled the old Droid Army factories and the clone factories on Kamino. If the Covenants could stand to fight mive continous amounts of battle units (consisting of Clone/Storm troopers and Droids) then Covenants would win. But even with that much advanced technology, it would be futile because there would be too much to kill.