Originally posted by Dark Envy
1) USE GRAMMER IDIOT.
2)Obi-Wan used Ataru, live it with. Hes used it against Grevious and Anakin. When the hell in my post, did I say defense never atks?
1) Completely uncalled for. Try it yourself, by the way.
2) No, he didn't. Live with it. After TPM, he never reverted back to Ataru. If he had attempted Ataru techniques against either of those two, he would have been torn to shreds. They're two of the fastest combatants of the era, faster than any aggressive duelist save for Yoda, Mace, and the Emperor. Had Obi-Wan not used his superb Soresu ability, and not played defensive until the overly offensive duelists left themselves open, he would have been decimated.
He used Soresu. Get over it.
As to the fight, I'd have to say Grievous. Obi-Wan at this point, while certainly improved from AOTC, is not yet advanced enough in Soresu to take on Grievous and come out alive. He'd hold his own for a bit, but considering Asajj was able to floor him in seconds, and that he may have been killed then and there had Kit Fisto not intervened, I can confidently say that the General would win.
P.S. -- Grievous has never fought Ventress before. He may have sparred with her in a yet-to-be-revealed point during the war, but if you're referring to the Star Wars Tales version, you've got nothing. It has no value.