Meanwhile Sean Payton is Sean Paytoning in Denver

his system is outdated
That's it.

A lot of people aren't able to zoom out and see the ebb and flow of things. There was a time in the NBA where bigs dominated the game. Can you imagine Shaq trying to play in today's NBA? Then other teams adapt and what used to work becomes obsolete.

There was a time the Payton offense worked. Anyone saying it was all Drew Brees ignores the fact that Drew just lost his starting job in SD before coming here. He didn't get bit by a radioactive spider during that off-season. Sean Payton was at the top of the game. Then teams adapted and figured him out.

It will eventually happen to Kubiak, too, unless he learns to adjust as defenses adapt.