Wait a minute, you guys realize all I am saying is that he will give them trouble, correct? Not that he would win?I don't really care enough to debate that he could win, because he can't.......
Yes, it would be difficult fight for them.
You argued that Kenobi would be more likely to resist brother's Force attacks, so I felt need to argue against that.
Judging on Kenobi's combat feats: overwhelming brothers with Jarkai, stalemating enraged Anakin in such a prolong fight and later defeating Sharad Hett, I consider Kenobi by all accounts to be immensely powerful. However, as I said he lacks skill in Force defence.
By the way I think Kenobi can still overcome Force attacks of either of them in one on one fight as he wouldn't need to direct entire effort on lightsaber fight. He would be more likely to put up Force defense like with Anakin and probably will take advantage of surroundings. Even in fight against both brothers Maul's Force choke didn't incapacitate Kenobi. Also, Maul Force blasted Kenobi because of getting enraged. Without brother being hurt he wouldn't be able to muster such a powerful Force attack.
Anyways, mastering styles will give you a significant advantage. Especially if its Makashi, and you are fighting a Soresu user, as the premise of their style will be wasted (making opponents waste energy) and Makashi excels at breaching their defense.
The style makes a good part of the fight with technical forms like Makashi.
No, advantage of Soresu is not wasted against any style. If Dooku won't get tired, then Kenobi won't get tired either. And Dooku still can get tired. While he uses less energy, his stamina is nowhere as high as Anakin's or Kenobi's.
Sometimes I practise with wooden sword. And I assure you that swordfight is 10 times simpler than grappling and ammount of techniques is so low that it doesn't matter what style you engage.
In SW all sword techniques come from first two Forms: two-handed techniques from I and one-handed - from II. Other Forms bring nothing more than phylosophy, except Ataru that gives acrobatics.
As proof look at fight of Kenobi and Anakin. Kenobi taught Anakin all moves, the way they fought looked exactly the same, they even executed several moves in parallel perfectly mirroring each other. The only difference was that Kenobi fought defensively giving ground, while Anakin - offensively. Dooku doesn't know a single technique, Kenobi doesn't.
Anyway whatever is your opinion about styles, assuming that Dooku can penetrate defenses of Kenobi, when Maul and Opress couldn't do it combined, doesn't make sense at all.