I was curious enough about the notoriously wrongheaded PFF's rating on Allen to do this legwork. I pulled every Allen punt this year, and broke it down by situation, trying to judge each punt by situation. Here's what I found.
He was asked to bail the Patriots out of trouble twice (NWE15 or worse). Both times he punted to the sideline to prevent a return, and the resulting possession started around the NWE45 or so. I'd give that a C+/B-.
He had 5 opportunities to pin back the opponent, punting from the NWE45 or better. Of those, he had 4 punts downed within the 20, 1 touchback. That seems to be an A-.
In the zone of NWE16-30, he's punted 9 times. 5 resulted in OPP 20-35 range, and 4 in the OPP 36-50 range. No catastrophic returns or pinbacks. Probably C+/B-
In the zone of NWE 31-44, he's punted six times. 3 resulted in pinbacks, 2 in the OPP 20-35 range, and 1 in the 36-50 range. No catastrophic returns to NWE territory. Probably B+.
Without doing this for every punter or more than one season, it's hard to say whether this is better or worse than other punters. I think it's worth saying that the only two drives after punts that started in NE territory were the ones where Allen was punting from the goal line. The next worst field position after that was the OPP 40 yard line. I think the room for improvement would be the Middle-Long situations of punting from the NE 16-30 yard line, but what do I know?
It's worth noting that Football Outsiders'
DVOA for punting doesn't like the Pats' punting unit much either, ranking them 30th out of 32 after week 4. (Week 5 had four good punt results, so it may improve) Their methodology purports to compare apples to apples rather than whatever it is PFF thinks it's doing.