The question last year was entirely about game adjustments and coaching. Dallas was within one touchdown drive of winning in 7 games last year. Romo had been the author and definer of the offense in previous years which Linehan said was based entirely on Romo under Linehans "suggestions". The team somehow was in the games and just needed some actual manipulation and strategy to pull off a win (something that we saw in every game this year) but Garrett refused to allow any flavor greater than vanilla during the games and the QBs who were all picked by Garrett based on their previous knowledge of Garrett's system so he didn't have to coach them, were largely hung out to dry during passing downs. Look, Garrett's passing system is so bad for the team that in 2014 where Romo had the ultimate protection of DeMarco Murrays 1800 yards rushing and 50+ yards receiving, which should have afforded him gobs of time to throw from play action, still got him sacked 30 times. In his worst year, Romo was sacked 36 yimes. If you watched the times this year where Dak gets a lot of pressure and sacked, it's when it's an obvious passing down and the defense has the advantage. Dak was sacked most on shotgun plays (23) in which Dallas had a huddle. Obvious pass plays that also gave the defense time to matchup. Garrett's delusion is that his WRs cause matchup problems. It's bogus. Elements of surprise with formations or play action or motion allows the predictable plays to be unpredictable. He is unwaveringly convinced that Dunbar is a mismatch.
As the NFL Network morning show said last summer "How Jason Garrett is still keeping his job is beyond me".