In the 3 years prior to Shoop, PSU avg'd 6th in the B-10 in total D. They avg'd 3rd in his two years.
Vandy was 8th, 9th, and 12th (last) in the 3 years prior to Shoop. They improved to 6th, 5th, and 6th under Shoop.
Again, he may be Sunseri all over.... Past performance isn't a guarantee of future results.... but it is the best indicator.
All things aren't quite equal. Jones has to beat the man to be the man.... but he has many advantages this year. He returns 17 starters and most of his depth. Bama lost a number of quality starters. He returns a 3 year starter at QB. Bama again has to replace a starter and this time they won't have the "easy button" of turning around and handing it off to Henry. (Yeah, you have talented guys fighting for the job but none at that level yet).
UT should be in better shape on O than Bama. Saban and his new DC have to make up for that on D.