Originally posted by Lord Lucien
Anakin wasn't "weakened" in the traditional sense. He certainly wasn't all Zoned up, but he wasn't weakened. He was drawing on the Dark Side. It's known fact that he just gets stronger the longer a fight lasts. His psyche was preventing him from thinking clearly or planning ahead, like Kenobi was doing.
It doesn't really matter, in the end it was his psyche that lost him the battle, which is what i was trying to say in the first place, but thanks Lucien cos your statement only proves that further.