The point is very simple that 4 PI's (or similar) is jaw-dropping when viewed vs. the league. Heck 19 PI's (or 1.95/gm) probably is not terrible on the defensive side. I can't fathom that few penalties or disparity. While passes may go to the sideline, there are still routes over the middle and contact could be called. Heck with Watkins at least he hould have drawn a few. Too lazy to check NE or Denver calls.
I found this:
http://www.nflpenalties.com/
Pass Interference, Defensive Holding, Illegal Use of Hands & Illegal Contact have resulted in 460 penalties divided amongst 32 teams is 14.375, meaning Buffalo has 10 less then the league average!!!!
1972 is when I first became a bills fan (or earliest memories as father was not a sports fan). Attending games was only the early 80's......