Every team has weaknesses - keep in mind it comes down to the other team’s ability to exploit your weaknesses. The Chiefs, sadly for us as fans, have been better at it repeatedly.
One thing thing Joe mentioned was slow starts have hurt the Bills repeatedly all season - it really hurt last night. I have no idea whether this is the case or not but Josh came out tight and nervous. He reverted to “bad Josh.” At the end of the day, like it or not the game was repeatedly in his hands and yes he came up big a few times., just not enough. Marino also said maybe this was in part due to Kincaid and Josh not developing the type of chemistry that could have been expected. Josh really had no single person to turn to in a jam. JA even tried to get Coleman “go get’ ‘em” balls to Keon and it was not there.
Part of why I listen to Marino is that he is objective. Fans and talking heads rant and point at what are often meaningless things.