Some background on the losses:
04- loss (U-G-L-Y)
05- win
06-loss (Saban, 66 net passing yards, 5 sacks, 3 fumbles, 9 penalties, shutout)
09-loss (This loss was the 3rd loss in the last 4 games)
12- win
12- loss (last game of the season - we already had the #1 seed if I recall)
15-loss (last game of the season, game definitely mattered, coming into game Patriots were 2-3 over their last 5, extra tough Nov/Dec injuries if I recall, Miami with I believe almost 400 yards passing)
16-win
Yes, that sounds like a whole lotta excuses (maybe so). And the Patriots are absolutely not invulnerable to loss, Brady is not invulnerable to having a bad game. But you can see starting at 09 the losses were foretold by an already established troubling trend. So based on 09 trend->loss pattern and with the Patriots 2017 ++trend coming into Monday night, a loss to the Phins would be unusual to that list above, IMHO