I find it somewhat hard to comment on the 'prophecy' because we never actually hear what the 'prophecy' IS. Several characters talk about their take on the prophecy, their own definitions of it (which is realistic), but we the viewers never get to make or own true judgments. As important as it was to the story of the prequels I would have liked THAT to have been the opening crawl of Episode 1- instead of 'blah, blah, blah' about trade blockades and junk like that, open with the prophecy:

"It has been fortold, in days long ago, that out of chaos shall rise....." etc, etc etc.