They knew they were going to lose before they got there.
With Hurts out they knew the offense would struggle- and it did- giving up four turnovers.
The defense of the Eagles knew they couldn't play as aggressive because they would have to be on the field longer with their offense not being up to par.
It was a good victory, but one that anyone who knows football expected.
Dak got to play against a weaker version of the team Cooper Rush faced, and still nearly gave the game away early. The Cowboys won by six points after getting four turnovers from the Eagles, but Dak gave the Eagles seven points himself.
And the Cowboys were at home. Dak didn't have to play against a hostile crowd, one that would gave eaten him alive after the early pick six.
The Cowboys were able to maintain the momentum going against a weaker Eagles offense, so Dak played well.
You asked.