The Eagles spent the offseason signing and trading to get better coming off a playoff berth in 2021. Sometimes that strategy works and sometimes it doesn't, but they are sitting at 6-0 right now, so we can only assume that their plan is paying off. The Eagles have had success doing this in the past and have a Super Bowl in 2017 to show for it.
The Cowboys hardly ever do any major signings or trades during the offseason and instead chose to try and fill needs in the draft, with cheap free agents, or plug and play guys that have been on the roster as backups in the past. We went 12-5 last year and instead of trying to build on that success by adding talent, we get rid of talent and deplete the roster and don't replace it with better or equal talent.
The game last night looked like a team that tried to get better and made it a priority going up against a team that didn't make the effort required to improve. Cooper Rush can be blamed until you're blue in the face, and yes he was horrible, but Cooper Rush even playing is just another example of the Cowboys organization not trying to improve a position of need and sticking with a guy their familiar with instead.