I hate to state the obvious here but I am fairly certain that Andy Coen has one (6-5) winning record without Dave Checcini. His defense without Kotulski is also horrible.
After a succession of losing seasons, DC came in, surveyed the QB situation and immediately decided that the kid on the bench was superior. That meant that a two-time MVP of the Lafayette game went to the pine. Meanwhile, the new QB led the way. On D, Kotulski’s teams were competitive. Can’t say that about the last two seasons.
Summing up, Andy appears to be as good as his assistants, especially the coordinators. Better beef up the pay grade to attract and retain top notch coaches.