Uh, yeah.
Beginning of the fight->Couldn't save his fellow Jedi from Sidious, he coul barely react
End of the fight->Statlemate
Y'know Silvers blog to this?
Also, credit to NewGuy, quotes for Yoda>Mace
Do I need to demonstrate what responses you can expect from Cin Drallig or Obi-Wan Kenobi? From Mace Windu or, stars help you, Yoda?"
—Labyrinth of Evil
Yoda had mastered the exceptional art of Form IV lightsaber combat, and was widely acknowledged as the greatest lightsaber duellist in the Jedi Order. His lightsaber skills were legendary among the Jedi, not least because, until the Battle of Geonosis, few had ever seen Yoda in combat.
—Star Wars Fact Files
Master Windu himself remained perfectly balanced and centered. In the history of the Jedi Order, only two opponents ever overcame him in battle. One was Master Yoda, who some said was the Order's true master of lightsaber combat. The other was former Master Dooku, whose own fighting style was archaic, yet stunningly effective.
—Power of the Jedi Sourcebook
Though it was true that he had slowed slightly in the years that Windu had known him, Yoda's skill with a lightsaber was still second to none on the council.
—Darth Maul: Shadow Hunter
With a stooped, small appearance, Yoda may not look like a great warrior, but his skills with a lightsaber were unequaled.
—Lightsabers: A Guide to Weapons of the Force
Mace won the fight.
I do think Yoda is above Mace, but not that far above him in sabers.
None of that proves he was heavily amped.
Mace didn't think he would need to defend them because he was confident in their abilities.
Mace had sparred with Tiin before, so he knew what he was capable of, he turned out to be wrong.
Mace Windu hasn't beat Sidious fair, lol.
http://comicvine.gamespot.com/profile/silver2467/blog/mace-windu-vs-darth-sidious-what-really-happened-r/77247/
In terms of quotes yes, but what I've actually seen whether it be in TCW or ROTS, they aren't that great. Yoda goes all out with a massive assault and tires quickly and his fights haven't really lasted more than a few minutes. Sidious defeats everyone he's faced with superior augmentation, trickery or TK