They did start slow being down 17-3. After that they outscored them 31-11 and the defense was much better in the 2nd half. Also, many teams don't play starters in the preseason at all. So, week 1 and week 2 is almost like preseason for the starters. That is why you see many teams look sloppy in the first couple of weeks. I also think the Bills win in a high scoring game. I got 34-31. It won't be an easy game as divisional rivalry games usually are tough especially on the road.