Consider how and when he took over at ND. There was talent on the roster but a team that folded in the fourth quarter and in November, mostly due to strength and conditioning. He comes to ND and goes 8-3 vs SC after 8 straight years of defeat to the Trojans prior to his arrival. Wins more games than Rockne, never finishes higher than 3rd.
In this era, the SEC is deeper than it was before for Saban. It's probably going to be more of the same. Very stable, good but not great, no National Championship. Some good, but ultimately, does he get you to the mountain top? Probably not.