Saban was a mediocre coach at Michigan State. If he had immediately followed Tom Osborne, he probably would have had a couple of mediocre years before winning any championships.
No kidding? Did I say Saban or Meyer would have won a national title at NU the first year they succeeded him?
My point is: Saban went to LSU went 8-4, 10-3, 8-5, and then 13-1, and won the national title. The year before he got there, LSU was 3-8.
He then went to Bama, they went 7-6, 12-1, 14-0, and national title. The year before he got there Bama was 3-8.
Urban Meyer went to Utah for 2 years. In year 1 they went 10-2, then in year 2, they went 12-0. When he got there, Utah was coming off a 5-6 season.
From there to Florida. 9-3, then 13-1 and a national title, then 9-4, then 13-1 and another national title. The year before he got there Florida was 7-5.
From Florida to Ohio State, and went 12-0, then 12-2, then 14-1, and the national title. The year before he got there Ohio State was 6-7.
Regardless of where they went, Saban or Meyer, and even Stoops turned those programs around.
NU was in WAY better condition as a program the year after TO retired (coming off 2 national titles and 3 of the last 4 national titles) than any of these schools. It's highly likely the success would have followed very quickly. Their history says that is true.