Originally posted by Galan007
GL outright said that Anakin's actions bothered him to such an extent that he literally regretted turning to the dark side-- hence him crying on Mustafar.Either way, shame/guilt/remorse/doubt/conflict-- those emotions do not strengthen, they weaken(look at any force-user who has ever taken doubt with them into a saber fight, for example.) That is my only point.
What relevance does it have to actual fight with Kenobi? During fight Anakin demonstrated the best performance in his life.
Canonically Anakin's combat prowess during fight with Kenobi was on parr with Yoda and Windu, despite popular believe that his performance was hampered.
Proof that Anakin is on parr with Sidious, Yoda and Mace in sabers:
"In Attack of the Clones, I had to give them levels," he says. "Sidious is a level nine [out of ten]. On this film, Obi is eight - he's moved up - Anakin is a nine; Mace is a nine, Yoda is a nine. They're up with Sidious". - The making of RotS.
Proof that levels are established by Lucas:
"The fighting has evolved in these last three movies considerably," says Gillard. "George Lucas works on a system of levels. So, on The Phantom Menace Obi-Wan would have been like a level six or seven. Now that we're on Episode III he's actually a level eight. When you move up the levels, it affects the style of fighting." - Nick Gillard, Homing Beacon #126
Proof that Anakin became level 9 by turning to darkside:
"To design and choreograph the sequence as well as the myriad other action-packed scenes in Revenge of the Sith Gillard says he first discussed with writer-director George Lucas the fighting prowess of each of the characters, which were ranked against other Jedi on a scale of 1 to 10.
Obi-Wan is at a level 8, which is where Anakin starts. But Anakin jumps to level 9 and the difference between 8 and 9 is enormous. A Jedi can get to level 9, but that's the difference between light and dark. The duel actually gives you quite an idea about these characters, because Anakin has learned the fighting, he's enormously talented but he hasn't learned the mental side of it". - Dueling Jedi article