__________________ Recently Produced and Distributed Young but High-Ranking Political Figure of Royal Ancestry within the Modern American Town Affectionately Referred To as Bel-Air.
Beg your pardon, but Obi-Wan's Force power was insignificant compared to Ommin who easily overpowered and subdued Arca Jeth, one of the top Masters of his day.
I'd say he'd beat all of them except Yoda, Jacen, Luke and Mace (maybe Kyp but I don't know much about him so I can't say).
Why do you think Ommin's and Jeth's powers--top of their day--is enough to get past Jerec, Lumiya, or Dooku?
__________________ Recently Produced and Distributed Young but High-Ranking Political Figure of Royal Ancestry within the Modern American Town Affectionately Referred To as Bel-Air.
Obi-Wan's force powers honestly kinda suck, at least in combat. He's wise, clever and a brilliant duelist, but it's rare indeed that he does major stuff with the force and wins through a strong defense and knowing when to strike.
I agree with chilled monkey on this one. Ancient Jedi and Sith could do things modern Jedi and Sith could never dream of; knowledge of the Force was lost over time. Heck, Darth Sidious, one of the most powerful of the modern Sith, got his butt royally handed to him by the ancient Sith, enough so that his flesh decayed and his Hands desperately tried to save his life (even went to prepare a clone for him), and the ancient Sith weren't even actively trying to kill Sidious; they merely insulted him in DE.
Once Obi-Wan defeats Darth Maul by simply walking into the room and using the light side to kill him, then he might be getting close to Arca Jeth. King Ommin was a Sith sorcerer, and he DEFEATED Jeth. I doubt any but Yoda, Luke, or Mace would be a match for Ommin, and even then it would be a very, very difficult battle for them.
I mean, Ommin incapacitates foes from miles away by concentrating the dark side power he saturates throughout a planet's atmosphere. He received training from Freedon Nadd himself; to see just a fraction of his power check out his story in the TOTJ companion. And, if one wants to use the dark-side-corruption-means-greater-power argument, then Ommin certainly wins out over Palpatine there.