Looking over this new system that apparently Troy Aikman created, it actually works really well....much, much better than the current system used to measure the top offenses and top defenses in the NFL.
It'd be nice to see the NFL implement it over the very flawed ranking system that is based on pure yards.
http://nfl.com/news/story/7683744
Also, here is how the system works:
http://nfl.com/news/story/7610861
The rankings will be updated for stats up to Week 3 by Wednesday afternoon.