Ok, plainer english: First, there is a positional penalty for being more than two steps away from your original position> SO, in the example of the team composed of Point guards and shooting guards, the ones of those playing at small forward and center don't even get the full benefit of their rankings. And then there is the fact that their rankings, while good, are unlikely to be well suited for post play.
Incidentally, the person using the word "Retrodictive", while I know what it means, has little standing to complain about someone else not using 'lay terms"