So, if the Bills had won some of the heart breaking losses this year, it wouldn't have mattered since it appeared that the coach didn't prepare the team properly?
Most of our losses could easily have been a win if a missed field goal had been made or a penalty had not been called, etc.
With the difference between win or loss in most of these games has been so small, I am not sure how you can point to a lack of preperation.
It also takes a game or two for teams to adjust to injuries to key players. The Bills have had more than their fair share this year.