A cow is a dumb animal, a beast of burden. I love cows, I've raised and sold them my whole life but they aren't something to be called. We are the Cowboys, hardworking, tough as nails.
The Cowboys D would have responded differently to a healthy QB. That's the problem with introducing hyperbole to an argument. You think your premise is the only thing that changes but that's not how it works. To every action, is a reaction, so when you add a healthy QB to the equation, the Cowboys respond differently to minimize that healthy QB.