I don't get that second paragraph. You're using one playoff game, Pats against the Chiefs to seemingly highlight what the Bills offense needs to do. That's one game. The Bills played a similar game against the Chiefs. The offense played lights out and the only difference in those 2 games was the coin toss. Pats won the toss, won the game. Same for the Chiefs.
Yes, the Bills offense has struggled in a couple of playoff games, but I don't think it's a strong enough argument to flip the tables on this. I'm still of the mindset that the D needs to be a better. We need more big plays. Especially in the playoffs.