The thing with Saban is that the guy can coach and developer players. He was doing that at MSU. As soon as he had some success, he left. So who knows where MSU would be at right now if he was still there.
Would he have the state of Michigan locked down recruiting wise? Looking at Michigan post Lloyd? Maybe.
Would he be pulling some top recruits out of Ohio? Most likely.
Would he be a national title contender? If Dantonio can get MSU to the playoffs, then Saban would have too.
All of this is pure speculation. But in my opinion, if Saban was still at MSU, OSU would not have had the run they have. You would see some MSU mixed in with OSU winning the conference.
Saban just didn’t have the patience to build it.