Tubberville at the helm at Clemson would have a MNC by now in the same years as Dabo. There are probably a very small group of others who could do better than Dabo as well but most of them aren't moving. I don't think he was a terrible hire in retrospect, but let's not get carried away. The ceiling on that program is very high with immediacy.
Oh, Hell No. Tubberville would have fired offensive and defensive coordinators a few times over to take the fall for his results, and would be looking for another position about right now. I'm not surprised he skipped town on Texas Tech--it's his standard operating principle.