I think it's much more that the Bills have no comparable player to Chris Jones like the Chiefs have who is essentially the defensive version of Mahomes on their team.
You need a big play late in clutch time? Jones is there. Even in today's game when the chips were down and they needed a stop he destroyed a screen play and then the next play causes Burrow to run for his life and he gets hit, fumbles and ball is returned for a TD.
In the playoffs, Jones has been responsible for multiple saved TDs late in games that would have given the other teams the lead (including against us last year).
Bills have nobody like this on D(perhaps Von of healthy). If we did, Allen would have won a SB already.