Buffalo did make alot of mistakes, but that call was huge. If that call isn't made, then Buffalo attempts a 55 yard FG on the next play, which is shorter than Hauschka's longest FG of the year. And he also was 4/4 on the day, so he was having a good day kicking the ball. And the penalty was marginal at best, yet it was the difference in whether Buffalo could attempt a game-winning FG or not.