I think the big takeaway is that as a team, you are trying to spend as much time in the contender window as possible. I dont think its even arguable that the passing offense is the most effective way to get there fast.
The pass offense first model, which to me looks like KC who have a great offense and a bad defense... The fact they have a bad defense doesnt take em out of contending. The defense first or generally adding talent everywhere model is really fragile. Some teams have had success with it but most failed. Look at the Jags, the Rex Ryan Jets, the Bears...
If I was going to illustrate this, a simple napkin drawing would do the trick.
On the left you have the offense first model which quickly rises in winning% as the offense is taken care of. On the left side, you've got your strong defensive team getting better at a steady rate but doesnt get a steeper curve until the offense starts to grow.... They're in the contender window much later and once they get there, its time to pay all to defensive guys... Most of those teams actually crumble shortly after entering the contender window....
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This is mostly an opinion though, I could be wrong just as well...