Taking things at face value, threshotting someone who could contend with someone who herself could challenge vader definitely puts kenobi above.
But then you'd have to reconcile that with bem's loss vs vader in anh.
He didn't really lose to Vader though, he let him strike him down. So the fact that he was able to fight evenly with Vader and 3 shot Maul is pretty damn impressive.
To begin with, Anakin and Obi-Wan did well, pushing Dooku back and destroying the B2 droids. Realizing that each Jedi was a threat on their own, Dooku abruptly switched tactics.
--The Star Wars Vehicle Collection #32
down Kenobi was there to meet him, blade weaving through a defensive velocity so bewilderingly fast that Dooku dared not even try a strike; he threw a feint toward Kenobi's face, then dropped and spun in a reverse ankle-sweep—but not only did Kenobi easily overleap this attack
--Revenge of the Sith
He drove a series of flashing thrusts toward Kenobi's legs to draw the Jedi Master into a flipping overhead leap so that Dooku could burn through his spine from kidneys to shoulder blades—and this image, this plan, was so clear in Dooku's mind that he almost failed to notice that Kenobi met every one of his thrusts without so much as moving his feet, staying perfectly centered, perfectly balanced, blade never moving a millimeter more than was necessary, deflecting without effort, riposting with flickering strikes and stabs swifter than the tongue of a Garollian ghost viper, and when Dooku felt Skywalker regain his feet and stride once more toward his back, he finally registered the source of that blinding defensive velocity Kenobi had used a moment ago, and only then, belatedly, did he understand that Kenobi's Ataro and Shii-Cho had been ploys, as well.
Kenobi had become a master of Soresu.
Dooku found himself having a sudden, unexpected, overpowering, and entirely distressing bad feeling about this...
--Revenge of the Sith
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"You presume limits to our double standards. There are none." - Vitidiots