Adding to what I said last night about the offenses being different in 2015...
The numbers do speak for themselves. The 2011 defense averaged an interception a game while the 2015 defense averaged 1.3 interceptions a game. The 2011 defense recorded 2.3 sacks a game compared to the 3.5 per game recorded by the 2015 defense.
The 2011 defense gave up an average of 183.62 yards per game while the 2015 gave up 276.33. The difference? The 2015 defense's opponents averaged 66.01 yards more on the season. Each defense held its opponents to over 100 yards below their season average (162.46 in 2011 and 135.76 in 2015). The 2011 defense did much better by holding opponents to an average of 3.41 yards per play while the 2015 defense held opponents to 4.25 yards per play.
IOW, each defense was great. The 2015 defense got more sacks and interceptions while the 2011 defense wouldn't kept teams well below their averages.
We're all going to miss Coach Smart. That saban-smart tamdum took years before alabama to get going. We caught something special blossoming from years of sowing, and what a wonderful time. Can any of you reasonably expect much of a difference in the defensive success switching DCs?