[Airborne Butters]

I think Mace Windu coulda taken him, but the Emperor was totally faking. Look at how fast he killed off those 3 'Masters' that came with Windu. 2 saber thrust and down went the first 2, then a little block from the 3rd and he died.

Mace Windu's saber style is more about parrying and defending. He can take the momentum you swing at him with and redirect it back at you,hence the reversle of lightning. Most sabers just absorb the lightning and not fire it back.