Nick: I think it's a little more simpler than all of that. The Cowboys have had trouble with teams that try to get physical with them and run over them. If a team can strike first, and do so by running the ball and setting the tone, then it's usually something that keeps happening throughout the game. If you look at this front-7 the last few years, we're not talking about the biggest guys in the world. Micah Parsons is built like a linebacker but rushes the passer. We've seen a handful of linebackers that look like safeties. So when it comes to rushing the passer and playing pass defense, that's a mismatch that can favor the Cowboys. But everything has a flip side. And so when they face teams that are physical and like to run the ball and have backs that have a great mix of power and speed, it can cause problems. All of the losses the last few years have been against teams that have run the ball effectively. So to me, it's less about scheme and more about physicality. But to be honest, that's probably not a good thing.
https://www.dallascowboys.com/news/mailbag-defending-a-shanahan-based-scheme
The team can't stand toe to toe and pop them in the jaw by being tough.
The measured responses just might look pretty. Always looking like you are flat footed.