Wilcox did a good job at UT based on the players he had....go back and review the defensive numbers if you disagree
His defense was based on being less aggressive on the line, thus making a less-talented defense make less individual decisions on reads and stay on their heels for anything coming. Problem with this D, is it works well against poor-mediocre teams, but power-run teams like Bama, Georgia, SC, LSU, you're still going to see the talent gap. This D worked well at Boise too, especially against Oregon and the likes, where you never want to over-pursue an option offense, or you'll get burned.
Sal's D is based on dominating the line to deal with a power rush, and relies a little more on individual decision-making, which we've gotten hurt on. Like players pinning their ears back on a blitz, when they need to make a quick decision to cut the blitz and pursue the end, netting huge gains in run, and leaving us open on the perimeter for passes as well. In time, though, as the players watch film and learn from their mistakes, they will do much better. This D is required to compete with a team like Bama who you want to make some breaks, contain a power-run. Right now, our biggest issue is the OLB, they need to make quicker decisions, something they didn't have to do a lot in the Wilcox D.