Press the green flag and watch the fight which, by the way, is completely random. UPDATES FROM V.1: New (animated) backdrop! More accurate health for the B1s! B2 super battle droid! Trooper with DC-15a rifle! Better sound effects!
If you can, run this as many times as possible to see if the proportion of clone victories to droid victories is regular. In the end, it gives total victories for both sides.