Yes, I agree with the Pantsman here.... a bit. I mentioned that Vader was probably worn out by that fight, because of the breathing. Tha may only have been a mechanical malfunction though. But Palpy's lighting defintality did him in.
As for Luke as the CO, I hate the prophecy bit because it was thought up AFTER the OT was complete. The entire OT does not fit the pursuit of a prophetic saviour.
Also, we do not KNOW the prophcey speaks of a Vergence in the Force, only of "the One who will bring balance to the Force". So that condition does not count at all. If killing off a Sith is the only condition of restoring balance, then OB1 fits the profile as well.
Why I think Luke fits the profile better is simply because Anakin/Vader doesn't do anything but kill off people with sabres and choke holds. He's evil, all the way. Luke holds on to the light side, despite his heavy ordeal, despite all the suffering and great temptation. And then when he falls for the Dark Side after Vader's sister line, he manages to turn back, resisting Palpy. He leaves himself defenseless, suffers from it almost to death, but through that suffering and through the path he has shown Vader that a turn is possible, Vader turns as well and chucks the totally distracted Palpy down the chute.
If I'm allowed to make any religious parrallels here, that profile of Luke fits that of the best known Messiah of all: Jesus.
That's why, Ush.
And I know it's not gonna be this way, but it'd be a lot better.