Well, facts are facts.
No opinion there, just cold, hard data.
We all know that the Cowboys (including Dak) have underperformed (even vs the league average) vs teams with top 1/3 or even 1/2 defenses....averaging in the 19-20 ppg range. Those teams are often playoff teams as well.
It's been a long-running theme and is fairly predictable.
Btw, to be fair, it's tough for any team or QB to fare well vs the better defenses. So Dak isn't completely alone....though most of the top 10 QBs (and offenses overall) do tend to fare a bit better statistically.
Also, a team won-loss record isn't the best indicator if pointing at one player...again, to be fair.