You can do what you're doing with any coach. I don't think there's a coach alive that has only had great success. How did those 3 years at UConn go? How are those middle of the road Bears defense doing? Anyone can cherry pick. Thing with GRob is that people far far smarter than you or I kept hiring the guy. Both pro and college.
Robinson was and is horrible. When there is any aspect of success it's a surprise.
2000 - his last year in Denver, 24th in TD, 30th in Yds per play allowed, 7th in rush defense, 31st pass defense, 23rd scoring defense.
2001 - KC 23rd TD, 23 ypp, 27th rush def, 14th pass def, 23rd scoring
2002 - 32rd TD, 30 ypp, 24th rush, 31st pass, 28th scoring
2003 29th TD, 25th ypp, 30th rush, 2oth pass, 19th scoring
2004 UT - 23rd TD, 16th rush, 58th pass, 18th scoring. One season, co-DC, 10-3 the year before
2005 SU 57th TD, 97th rush, 21st pass, 67th scoring, 1-10 record
2006 107th TD, 110th rush, 76th pass, 72nd scoring, 4-8 record
2007 111th TD, 108th rush, 102nd pass, 104th scoring, 3-9 record
2008 101st TD, 101st rush, 83rd pass, 101st scoring, 2-10 record
SU tenure, worst four years in school history, 4 worst offenses, 3 worst defenses in school history.
That wasn't just a "it just didn't work out" he was a complete system failure onto himself.
Shafer comes in the next year, 37th TD, 13th rushing, 85th pass, 81st Scoring
He picked up from Shafer at UM 2009. Year before under Shafer, 69th TD, 50 Rush, 87th pass, 83 rd scoring
2009 82nd TD, 91st Rush, 67th Pass, 77th scoring
2010 110th TD, 95th Rush, 112th Pass, 108 scoring.
Within four years Greg Robinson managed to have the worst defenses in the history of both SU and Michigan. Within 9 seasons (KC 2002, SU 2007, UM 2010) he was the coordinator of the three worst defenses playing at that level that season.
His great recent "success" is UT last year 68th, 83 rush, 53 pass, 57 scoring.
This year he is DC at 3-9 San Jose St, remarkably they are 26th in total defense, but that is because they are 11oth in rush def and teams don't bother throwing against them. They are 1st in pass defense, so that got that going for them, I guess. Even if teams don't throw against them they are 69th in scoring.
On his own as a college DC or HC his rush defenses have been 97th, 110th, 108th, 101st, 91st, 95th, 83rd, and 110th at four different schools. See a consistent pattern there? And it's right in line with his performance in the NFL. Want to tell me what I'm cherry picking there?
It was common knowledge coming out of the NFL that his run defense schemes and the way he coached them were awful.
You can't win if you can't stop the run. First job of any defense and he has failed at every stop.
Find another coach with that history of disaster.