In this scenario, Yoda always wins. Let me go a little further and explain. Mace Windu’s overall fighting style, his entire ethos, revolves around using the Master Yoda May the force be with you shirt knowledge of darkness in himself to reflect his enemy’s aggression. It is a philosophy, a technique, a fighting style – all in all – that is designed to turn the dark side against itself. If Yoda had somehow fallen on the Dark Side, though his raw strength had surpassed Windus, Master Windu would be uniquely able to use this hatred, anger, fear against Yoda when they were aimed at him.
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But what if Mace Windu fell himself? Why should he hit Yoda? Because his style prepared him to use his inner darkness to fight on the Master Yoda May the force be with you shirt brink of aggression, to recognize the feeling and the force of the dark power. It would be easier for him than Yoda to get used to the weapon of emotion. And another one. Mace Windu never saw Yoda as a baby. Keep in mind that Windu Palpatine and Palpatine defeated Yoda, although Yoda was clearly classified as more powerful than Windu.