Please explain "nearly lost".
Because if I recall correctly, the Panthers offense NEVER TOOK A SINGLE SNAP IN THE 4TH QUARTER WITH THE ABILITY TO TIE THE GAME.
I mean, to ME, "nearly lost" would have been the Panthers had a drive in the 4th Quarter and nearly scored to WIN the game. That is not what happened. Hell, that COULDN'T happen even if they had one more drive as they still needed to score 9 point to win the game in regulation. I don't know how teams score 9 points in a single drive in the NFL, but maybe I am just ignorant.
But to get to the premise of the OP. I couldn't care less about yards. Like Belichick, tell me how many points the D is giving up per game and how many turnovers they produced. With JUST those two things, I will be able to guess 95% of the time if that is a good NFL defense or not.
Right now, while the D could easily improve, they are not anywhere close to "bad", especially 2020 bad.