Originally posted by carthage
Better speed, physical attributes, likely comparable saber skill. And given Plagueis's disdain for lightsaber combat, Vaapad would likely not help Windu.
Windu mastered all 7 forms and defeated ROTS Sidious (although the novel implies Palpatine feigned his defeat.). His speed equaled Sidious' and even Anakin stated they were nothing more than red and purple blurs. Even if Plagueis disdains lightsaber combat and decides to use the Force, Mace can still win.