i'm sure this is a really stupid take but-
i don't think you can compare Saban to anyone outside of recent history. he's benefitting from the consolidation of talent at big programs like alabama. just like urban meyer has at florida and will continue to do at osu, etc.
in the present era with so much focus on the game and the talent within it, it's much easier to build these dynasties.
i'm saying in the future we'll see more of this. bama will cool, osu will take over, then usc, then texas, then bama, they'll just play hot potato.