Tons of teams, even yearly, have had the same levels of talent across the board on their defenses and not gotten anywhere close to the level of dominance of that unit. You can accredit all of that to Suh if you'd like, but I don't know how you can get past remembering that a ton of our quarterbacks and hurries were coverage sacks due to blanket coverage, which still continued after Suh was no longer on the roster. The 2010 defense was still pretty damn dominant and borderline elite, and even after that, we always led the nation in passing efficiency defense despite poor defensive line play (and no, it wasn't because teams had so much success running the ball that they didn't HAVE to pass on us).
Things like holding 2011 Michigan State to 3 points, 2012 Wisconsin (the first time) to 56 yards rushing, and others still happened after the fact.
How in the hell did he manage to set so many defensive futility marks here? I don't know. That's what's fascinating. I have no idea how to reconcile the two realities, because chalking up the entirety of the really good reality to a roster with NFL players seems way too ridiculously simple to cover it. That 2009 defense was not the most talented defense in the entirety of college football in the last 15 years by a long shot, Suh or no Suh, but it was right around the most dominant. That doesn't just happen with a mediocre neanderthal of a defensive coach.
You can laugh and question people's intelligence all you want, but you're finding comfort in a very broad and simplistic answer to a question/situation that likely has a ton of nuance, so I'd think you have your own head in the sand more than you think.
LOMS, I agree with most of what you're saying, I just think you might be selling the rest of that 09 and 10 defense short. 09 of course had the once in a generation player, but behind him was an NFL LB in Dillard. Then 4 NFL DB's in Prince, Fonzie, Gomes, and Hagg. I think one of the D-ends even got drafted but could be wrong. Asante too if he was on that D can't recall right now.
2010 Still had those 4 DB's, another NFL starter in Crick, and in my opinion a once in a generation LB in Lavonte David. Has anyone been following David's career, by some football metric stat he has been by far the best run stopping LB in the NFL and gets an inordinate amount of TFL's for a guy that rarely rushes the QB.