I have ZERO doubt in my mind that the Bills go to the Super Bowl if they win in the 13 seconds game.
That was a much more flawed Bengals team than the one we lost to the next year and it took a comedy of errors on the Chiefs to lose that AFCCG to them. Chiefs were up by 3 scores at one point (if I remember correctly). If they just kick the field goal before halftime (instead of going for the endzone), they likely win.
That and the Bills were on absolute fire that postseason.