Data on Super Bowl winners and the best regular season teams, along with the rest of the article, at the link:http://www.pro-football-reference.com/blog/?p=1133I propose that from now on, we rank passing offenses not by passing yards but by either adjusted net yards per attempt or by Value - the number of adjusted yards gained over the league average.
Adjusted net yards per attempt, of course, is calculated by adding 20 yards (previously 10 yards) for each passing touchdown, subtracting 45 yards for each interception, subtracting sack yards from gross passing yards, and dividing this adjusted yardage by the combined number of sacks and attempts. That gives you the adjusted net yards per attempt for every player or team. To get their Value, you would subtract the league average from that number and multiply the difference by their number of combined sacks and pass attempts.
To me, this is a much better way to rank team passing. For example, the 2008 Rams passed for 2,947 yards while the Titans passed for 2,819 yards. But along with those numbers, the Rams had 11 TD passes, 19 INTs, 520 attempts and were sacked 45 times. The Titans had 13 TD throws, 11 INTs, 453 attempts and were only sacked twelve times. The Rams averaged 4.09 ANY/A while the Titans averaged 5.75 adjusted net yards per attempt. With a league-wide average of 5.70 ANY/A, that puts the Rams at -911 yards above average (Value) and the Titans at 23 yards of Value. So despite St. Louis ranking ahead of Tennessee in passing yards, it seems obvious to me the the Titans were the far superior passing team.