Bama, Clemson, Ohio State - Similar programs in many ways. And they all end up at or near the top of the 247 recruiting rankings year in and out.
In my opinion, Clemson is a different situation. What Saban, Tressel, Meyer, and Day have done at Bama and Ohio State is phenomenal and I don't mean to take credit away from them, but I view Dabo's accomplishment at Clemson as MUCH more impressive because it is unprecedented.
Saban, Tressel, Meyer, and Day coach(ed) at schools that had GREAT coaches long before they arrived. If you asked a casual CFB fan to name a famous (pre 2000) coach from Bama, tOSU, and Clemson most of them would say "Bear, Woody, and I don't know."
Saban has won five AP NC's at Bama. That is phenomenal but not unprecedented. They had six before he ever set foot on campus.
Tressel and Meyer have one AP NC each at tOSU which is great but again, they had three before Tressel got to Columbus and four by the time Meyer arrived.
Clemson has three AP NC's. From the first AP poll in 1936 through Dabo's arrival after the 2008 season they had one in 73 years. In his 11 going-on-twelve years they have two more.
When you look at the very best CFB programs of all time by whatever metric you choose, Bama and Ohio State are almost always near the top. Clemson, not so much.
I'll also add this. I am a lot more confident that Bama and tOSU will be at least reasonably successful programs 25 years from now than I am that Clemson will be. Bama and tOSU have LONG histories of being at or near the top of this sport. They did it before Saban/Tressel and I'm reasonably confident that they'll do it after Saban/Day are gone. Clemson, IMHO, remains to be seen. Will the post-Dabo coach be able to keep Dabo's machine humming along or will they fall back to pre-Dabo status?