The Patriots punted 57 times this year, and 58 times last year (similar caliber/style offenses). Plus 9 more punts in 3 postseason games. That's an average of 3.5 per game. The Giants bet is a bit harder to peg. They had 80 punts in 19 games this year, but 12 of those were vs. San Fransisco. Depending on flukish you think that number is, I could see a justification for the under there too, but I can see the over there too.
Each team has an o/u of four punts. Hard not to take the over for both.
I think if you're gonna take the over on Patriots punts though, you might as well just bet the under and the Giants.