Originally posted by UshgarakYeah, he lost speed and dexterity.. Let's repeat what all big boys say. There still is no indication in the movies that Vader has trouble moving with his suit. Granted, it may sound logical that he is restricted by the suit but it's science fiction.
I already addressed that. GL has made it clear that Luke can defeat Vader because Vader has become de-powered. Luke was only a Padawan at the time and could not have beaten any of the powerful Jedi at their prime. Vader has lost not only his force power, but his speed and dexterity as well.
Luke can defeat Vader because lightsaber duels are variable as hell.