hmm i think u guys are wrong. luke is more strong than vader would have been. and for one because luke is his son. his son and daughter could play a role to make ani feel bad for luke and leia. and at the precise moment they would strike. Luke owns and if leia hadn't become a politician she would've owned too.
infinity do u ever listen to what GLsaid? he said if vader reached his full potential without getting injured he would have been the strongest force user who ever lived,
that overwrites the powers of the ancient sith, DE sidious, NJO luke skywalker
and the yuuzhan vong wouldnt dare to go against the empire with anakin in charge and yet they did when luke in NJO