When did I ever say that? I'm just saying that the defensive rating isn't very accurate. Everything I have seen or read about D rating is HIGHLY skeptical of it. It has no good way to assign calculations on what % of a made shot is due to defense vs the offensive players ability. It gives credit to the defender for a defensive rebound by a teammate. It has a team defensive component to it. It has no way at all to rate zone defenses, who gets credit for what there? It simply has too many holes and gaps to fill.
Also it isn't needed. I can watch a BB game and tell you who can play D and who can't. For instance Gabe Olaseni has a better career D rate than Woody. This is simply laughable. The rating doesn't give any points for good footwork, good position defense, help defense, directing traffic, and many other important defensive elements. Gabe simply wasn't CLOSE to the defender that Woody was, but since he grabbed some rebounds and blocked shots, the D ratings say Gabe was better. Do you actually believe that Gabe was close to the defender that Woody was?