Isn't it every defenses goal to make offenses struggle? I don't think the challenges faced by the Bill's offense (or any offense for that matter) is a new dynamic. It's always been there. Digg's production this year, I believe, has been impacted by Sanders, Davis and Knox getting more of it and by defenses focusing more on Diggs.
The Bill's offensive output is what it is. Stats make it so. The Bills are a leader in these stats.
If it took DCs this long to figure out how to defend the Bill's, then there are some pretty shytty DCs out there.
Every team goes through periods when things just aren't clicking. This happens because of injuries, illnesses and the many other physical, mental and emotional things in all of our players lives - and then of course the collective of all of these things to the entire team. This is why there are really bad games, really good games and everything in between.
Right now, this Jags game is the outlier, simply by the sample sizes involved.