Wow. . .
Avis, that scenario was ridiculous. You require no further input on that matter, I believe.
As for all those people who say that Exar only beat Vodo because of this, or Vodo lost because of that; no. Exar is just that good. Why in hell would Vodo use a weapon that he sucks with when going on to challenge one of the most powerful beings in history? Master Bass was a dueling grandmaster. He used a walking stick for purposes unknown, but there is no possible way that the use of that particular weapon would lessen his ability.
Now, if you have read the comic, you would know what you're talking about. Exar, after dueling Vodo for, read it, six panels, ignites the second blade of his lightsaber, and on the next page, cleaves Bass in two. So yes, he defeated him in seconds, and without a hell of a lot of difficulty.
Am I saying that Yoda would get wasted in seconds? No. But he will fall, and somewhat quickly. Sure, his small size and agility make him impossible to strike for all but the best duelists. But Exar Kun, well, he's in a league of his own. He had speed like no other (note his saber's shape and size), mammoth strength (. . . ), and raw power that caused tremors as he walked. Not to mention his total mastery of the Dark Side (Sith spells that could freeze an entire chamber, and rituals that could drain the life force of an entire bloody race).
As for the others. Well, Ulic is an army of his own, and although lacking the insane qualities of Kun, he is incredibly powerful. The only one here outside of Yoda who could give Dark Lord more than twenty seconds's work. The rest are fodder. Mace may be able to hang with Exar for a few seconds due to Shatterpoint and his Vaapad, but unless everyone is holding off Kun, his Shatterpoint ability won't be able to find his enemy's weakness before he's sabered apart. Dooku, even with his Makashi mastery, wouldn't be able to last ten seconds here. He lacks the even minimal advantage possessed by Windu's style, and his form will be instantly familiar to Kun. Note the time period. Lastly, Malak won't last long either. While he was a formidable swordsman, Exar has the advantage in everything, speed, power, mobility, etcetera.
Basically, Yoda and Ulic are the only combatants here who wouldn't be vanquished by a few seconds worth of fighting. Remember, just because you have five powerful beings against one doesn't mean that you have a single entity with the ability of those five. I highly doubt that there is going to be much teamwork going on here. I'm not saying he wins or loses. Just trying to clear some things up. But regardless, Exar has a good chance here. Consider all the variables. Environment, tactical thinking, somebody tripping, whatever. Think about it.