He won at slightly above the historical win rate at Ole Miss. At Duke, he's been just slightly below the all-time school win percentage, but it's reasonable to show that it's much harder for a program like Duke to have a higher winning percentage in the modern A.C.C. than it was beforehand.
For comparative purposes, Cutcliffe is 72-79, has gone to 6 bowls and won 3 of them. His 4 predecessors were 6-45, 7-45, 17-39, and 13-30. They had one bowl appearance amongst them in 18 years.