The Duo would win because I think Obi-won could hold his own for a while against Mace and then Luke could like force push Mace's lightsaber in an awkward way and let Obi-won finish Mace.
DAR
Darth_NefarusRedi Knight
Neither of them are at this point skilled enough, even together, to take down Master Windu.
BOB
Bobafett34Restricted
YOUR A ****ING *** LOL
BOB
Bobafett34Restricted
MACE WINS U ****ING ******* MACE WINS IN 1 SECOND U **** LICKER FAGBAG ****** RETARDS