Go back a few pages on my post in favour of Obi-Wan. I'd like your point-by-point of my argument.
Lol, I'm totally gonna, but I work in 6 hrs so my no doubt long, point by point, reply to your well thought out (and very long) post will have to wait for tomorrow.
A question though, in preview of my own analysis, if Obi Wan is really so perfect defensively why did it take one of the 'big 3' duelists less than a minute to own him? That's with Dooku playing with him a bit first.
Dooku is apparently vastly better then Obi Wan in a one on one fight. Even in the second where he has Anakin's help for the first while he was completely ineffectual and was handled quick and clean.
I just see no justification in the fluff for Dooku being vastly superior to Mace.
I go back to my earlier illustration. Dooku couldn't do anything to anything to Yoda in a duel. Palpatine couldn't do anything significant to Yoda in a one on one fight. Mace beat Palpatine legitimately I believe.
Really, picking Obi over Mace makes no sense.
Mace beat a sith lord who trained Maul (who got the better Qui Gonn and Obi working in concert in a prolonged duel, losing only to a horribly represented surprise blow) from scratch. Maul wasn't even a Jedi previously. He got all his kick-two-Jedi's-asses-at-once skill from Palpatine. Mace beat Palpatine one on one. Palpatine couldn't beat Yoda. Dooku couldn't beat Yoda. Yoda couldn't beat Palpatine, but it seems to be implied that he was starting to edge Dooku.
The best saber combatants were indeed Yoda, Palpatine, Dooku and Mace.
Only Mace could beat Palpatine.
Form 7 is only attainable after first mastering multiple saber forms. I see no reason why Mace, the more experienced, skilled and powerful Jedi with the force, who knows Obi Wan's style and likely played a significant role in his training, would fight a stupidly aggressive fight against him just because you think his aggressive style demands it. Even if he did fight very aggressively, in my books that just means it would look similar to Obi vs Dooku 1 and 2.
You made several other points, about grievous and all. I'll tackle that tomorrow.
Edit: ok, one quick point about grievous, and it is a reiteration of an earlier post where I explained why it wasn't too far fetched for Palpatine to dispatch Fisto and the other 2 Jedi masters with such ease. Jedi of that era had relatively weak saber dueling skills. The last time your average Jedi had to deal with skilled saber combatants was at least a millennia before Yoda was born. Obi Wan was special and had recent experience against Maul, another form 7 practitioner, and twice against Dooku. And, he's Obi Wan Kenobi....but.. Mace and Yoda would have annihilated Grievous. Grievous was trained by Dooku. Obi Wan owned Grievous almost as bad as Dooku owned Obi Wan. Kinda tells you right there how ill prepared those other Jedi were. Also, there's no solid in-movie indication that Grievous killed all those Jedi in fair one on one duels. He just had their sabers. Even if he did, meh.
Edit two: between Kenobi and Greivous, who won the single combat portion of their fight? What did Obi Wan have to resort to using to win? A gun.