Kirwan based his list on a few factors: last year's performance, personnel changes, elite players, safety versatility, quality of the nickelback and depth for a dime package.
The Buffalo Bills, who finished second in pass defense last year, rounded out Kirwan's list.
Here are Kirwan's summaries:
2. Jets: "They might have been No. 1 if they had kept Kerry Rhodes. They are great at corner with Darrelle Revis and Antonio Cromartie, and in the nickel with Dwight Lowery or rookie Kyle Wilson. They will be a top dime defense. They had the fewest sacks of the five teams that made this list with 31, but they were tops in completion percentage defense and yards per pass attempt allowed."
5. Bills: "I can't believe they let defensive coordinator Perry Fewell go this offseason. They had the second-ranked pass defense, nabbed 28 interceptions, which was second to Green Bay's 30, and only allowed 14 touchdown passes."