So tell me, why it is important how the NFL ranks defences?
The question that was posed to you is just as valid. Why is it important how many passing yards Payton Manning had last year? It doesn't affect the schedule or anything the NFL does except for HOF voting at the end of a career. You need to re-read Aikman's article, he gives you reasons why it should be changed. It has very little to do with game to game football operations.
I can't believe that you are going to make me say something good about Billy Beane and Bill James. As much as I hate what they have done to the game of baseball there is one good thing that they have accomplished and that is getting people to see past the traditional stats to what is really important to the game.
James saw that OBP was much more important than BA - something that was seen by other a long time ago but the idea of sabermetrics popularized the idea that traditional stats are often misleading.
I completely disagree with this statement made by Aikman:
Changing the way we measure these statistics would not only be for the fans' benefit. In fact, it's more for the benefit of assistant coaches around the league. A lot of coaches get jobs based on what their units do statistically. There are a lot of offensive coordinators around the league that really want to throw the ball around, because it's more appealing -- it looks better and gets them noticed a little bit more.
There is no way that coaches are measured at all by how the NFL ranks defenses. In fact attempts to develop sabermetrics for football have failed because the game is much more complex and everybody know that it is a results oriented game and coaches are not measures on stats as much as outcomes and on field performance. Link
I do not believe that anyone really cares about how the NFL ranks defences. Any time I go to place a bet even I check how well the teams have fared against the run, against the pass and who their competition has been. Fantasy owners do the same, as do the real owners when evaluating their coaches. Look at how much time and effort goes into ranking college teams. When you come down to it the NFL defense rankings are about as important as the espn power polls.
Now I have to get back to one of the worst days of my life, I am going through an audit right now and I just wasted my smoke break responding to your post.