Was Yoda Wrong?

Who knows. I always felt like Yoda didn't give 100% in that fight.

(Braces for impact)

I always took Obi to be more of a Form IV kinda guy.

The third great lightsaber discipline was first developed in response to the advancement of blaster technology in the galaxy. As these weapons spread widely into the hands of evil-doers, Jedi had to develop unique means of defending themselves. Form III thus arose from
"laserblast" deflection training. Over the centuries it has transcended this origin to become a highly refined expression of non-aggressive Jedi philosophy. Form III maximizes defensive protection in a style characterized by tight, efficient movements that expose minimal target area compared to the relatively open style of some of the other Forms. True Form III masters are considered invincible.

Form IV is the acrobatic Form, heavily emphasizing Jedi abilities to run, jump, and spin in phenomenal ways by using the Force. Masters of Form IV incorporate all of the ways in which the Force helps them go beyond what is physically possible. Their lightsaber combat is astonishing to watch, filled with elaborate moves in the center of which a Jedi may be all but a blur.

In the time of Palpatine's Chancellorship, Form VI is the current standard in Jedi lightsaber training. This Form balances the emphases of other Forms with overall moderation, in keeping with the Jedi quest to achieve true harmony and justice without resorting to the rule of power. It is considered the "diplomat's Form" because it is less intensive in it's demands than the other disciplines, allowing Jedi to spend more time developing their skills in perception, political strategy, and negotiation. In practice, Form VI is a combination
of Forms I, III, IV, and V.
Young Jedi spend their first few years studying Form I and then a year or two with each additional Form before completing their training. By comparison, a Form VI master will spend at least ten years studying only that Form after completing basic Form I training. Form VI well suits the modern Jedi's role in the galaxy, in which a Knight overly trained in martial combat might be at a loss to resolve a complex political conflict between star systems. However, full masters of other Forms sometimes consider Form VI to be insufficiently demanding.

So it is possible that he was Form VI or at times uses Form VI, but overall Form IV sounds incredibly most likely. Wide flourishes, sweeps, blurs of motions... he's always twirling his lightsaber unnecessarily and flowing all over, doing the complex moves. It says Form III is more of a tight, compact, minimal moves, mainly used for deflecting lasers, kind of style.

What's the source for that? I agree with the others though.

Wookieepedia isn't exactly the best of places, I'd prefer the book names. (I am sorta under-read when it comes to the PT era)

As for the question of Yoda, I think that the Jedi had become so set in their own ways that they couldn't think outside the box, so therefore Obi Wan could not defeat Palpatine at that time.

If Anakin hadn't been such a moron and saw passed his own nose, he probably could have topped Palpy baby, as he was arrogantly certain of his control over Anakin.

Mel, your right about the Anakin thing. All Anakin had to do was run Palps through in his office and blam.

Are you talking about in A New Hope

My answer would be, of course Yoda was wrong, about many many things. All of the Jedi were in their last years before Order 66, that's why they were all beaten and made extinct.