Flash hardly embarrassed Superman there. You all say Green Lantern and Flash weren't used to someone as powerful as Supes. I say the same applies the other way around. Loving this! Superman is where he needs to be. Shown at the top :)
Obi wan would win. Yoda is the most powerful force user. Mace has the best lightsaber techniques. Obi wan is the most fundamental. He is the Spurs, he is the Patriots. I see Anakin as being the most powerful Jedi until expanded universe Luke. Obi beat him because he doesn't make mistakes. Everyone else does. His battle and win on Mustafar was his ascension to the greatest Jedi. Yoda's battle with Palpatine in the senate chamber was his fall.