yeah thats bad, I checked, and dallas has made playoffs 8 times since 2000 and only won 3 games all in WC round.
if you extend it to 1997, it is 10 playoffs with again just 3 wins.
if you extend it to 1996 it is 11 playoffs with just 4 wins, they lost in div round, and have lost in div round just about every time since then.
well check that, 6 div round losses and 5 WC losses since 96
What this shows is jerry can build a team good enough to make playoffs, but once there, they cant beat the better teams.
I think big part of this is the coaching at least in some of the years.
2007,2014,2016 the teams were good enough but the coaching was bad.