What I mean is that, according to this view of the prophecy, all his actions prior to the end of RotJ are, well, completely left out of the balance, so to speak. It's not a matter of a comparatively small thing supposedly balancing out a ton of crimes. Rather, it's a matter of the prophecy having far less relevancy than people assumed, and predicting one specific action while overlooking everything else.

So the only thing that is a "balance achievement" is the moment when Anakin/Vader takes out the Sith Lord.