Personally I don't even think the '72 Dolphins deserve the attention they get. They got very lucky down the stretch and in the playoffs in order to complete that perfect season. I wouldn't even put them in the top 10 teams all-time.
Same with these Patriots. They had a cupcake schedule to get to 8-0, and just had things fall their way in the second half of the season. The Giants obviously had them figured out in Week 17, and they got the job done on the second try. Like those storied Dolphins, they pale in comparison to the Packers of the 60's, the Steel Curtain of the 70's, the 49ers and Cowboys through the 80's and 90's, and even the early days of this Patriots "dynasty".