All of the Legacy Era crap about sith returning makes me wonder just what Anakin did. The prophecy was that he would bring balance to the force, nobody knows what that even means. Balance as in leaving only a Jedi? That doesn't seem balanced. Was it just to rid the Force of it's Dark Side? Then why do Sith keep popping up afterwards? How was being the Chosen One important at all??
Does no one watch movies anymore?
Is he not to destroy the Sith and bring balance to the Force?
"Balance" never meant equal. Rather, it's referring to the cosmic "flow" of the galaxy being off-kilter. What's the Force? It's an energy field that binds the galaxy together, right? What's the Dark Side? Fear, Hatred, Anger epitomized into powerful Force users. That's unnatural. Anakin's job is to remove that, which he did.
The problem is that The Prophecy wasn't official until '99, and by that point, the Sith in the EU had been resurrected several times over. This alone is one of the many reasons why the EU is going to be ignored in VII.