There is an understated elegance in Obi-Wan Kenobi's lightsaber technique, one that is quite unlike tha feel one might get from the other great swordsbeings of the Jedi Order. He lacks entirely the flash, the pure bold elan of an Anakin Skywalker, there is nowhere in him the penumbral ferocity of a Mace Windu or a Depa Billaba nor the stylish grace of a Shaak Ti or a Dooku, and he is nothing resembling the whirlwind of destruction tha Yoda can become.
He is simplicity itself.
That is his power.
(Skipping some text, he discusses his mission to kill Grievous with Mace Windu, discussin why he has been picked)
"I believe that of all living Jedi, you have the best chance to defeat him." Mace had said.
The pronouncement had startled Obi-Wan, and he had protested. After all, the only form in which he was truly even proficient was Soresu, which was the most common lightsaber form in the Jedi Order. Founded upon the basic deflection principles all PAdawns were taught-to enable them to protect themselves from blaster bolts-Soresu was very simple, and so restrained and defence oriented that it was very nearly downright passive.
"But surely, Master Windu," Obi-Wan had said, "You, with the power of Vaapad-or Yoda's mastery of Ataro-"
Mace Windu had almost smiled, "I created Vaapad to answer my weakness; it channels my own darkness into a weapon of the light. Master Yoda's Ataro is also an answer to weakness; the limitations of reach and mobility imposed by his stature and his age. But for you? What weakness does Soresu answer?"
Blinking, Obi-Wan had been forced to admit he'd never actually thought of it that way.
"That is so like you, Master Kenodi," The Korun Master had said, shaking his head, "I am called a great swordsman because I invented a lethal style; but who is greater, the creator of a killing form-or the master of the classic form?'
"I'm very flattered that you would consider me a master, but really-"
"Not a master. The master," Mace had said, "Be who you are, and Grievous will never defeat you."