The NFL has 32 teams now and there are no perfect teams. What’s the definition of a championship defense? If the definition is “good enough to get to a championship” then the answer is yes, it is, right now, today.
There’s no question in my mind that the Cowboys can win a championship this year. I don’t know if they will, but they can.
Another thing you have to realize is how the NFL has changed. How many teams do you see holding their opponents to under 20 points? Back when we were winning championships in the 90’s, that was common. Now? Less than half of games.
I love what Quinn has done. He’s not focused on yards or even points but turnovers.
THAT is how you build a championship defense in 2021.
https://www.footballdb.com/stats/turnovers.html
Dallas is currently 3rd in the NFL with +7. Not surprisingly, the two teams ahead are Buffalo and Arizona, maybe the two best teams in the NFL.