Honestly we were 1 and 1 last year and they have improved that 13 win team.
Honestly, Jerry Jones did not oversee the past two seasons only. Let's look at the other 25 prior seasons under his watch as well in order:
10-6,
6-10, 10-6,
8-8,
5-11,
5-11,
5-11, 10-6,
6-10, 9-7, 9-7, 13-3, 9-7, 11-5,
6-10,
8-8,
8-8,
8-8, 12-4,
4-12, 13-3, 9-7, 10-6,
8-8,
6-10
Above is the point
@Bobhaze was emphasizing. Your emphasis on the past two seasons is a causal factor of the previous 25.
Yes. The team is great now. It is the accumulation of a quarter century of stumbling-and-bumbling trial-and-error. The 'most experience' is a direct causation of refusing to step down in favor of better qualified managerial candidates. Candidates, whom themselves would have been fired, if they had overseen the poor performances embolden in red above. Heck. 9-7 seasons have ended some general managers careers in NFL history. Except in Dallas, of course.
Any person is the summation of all their experiences, both the good and the bad. Focusing only on the good will always paint an incomplete picture.