Answer based on context:

Coming off their close win over the Panthers the Saints flew to University of Phoenix Stadium for an NFC duel with the Cardinals. In the first quarter the Saints took the early lead as kicker John Carney nailed a 31-yard field goal, followed by QB Drew Brees completing a 1-yard TD pass to TE Jeremy Shockey. The Cardinals replied with kicker Jay Feely making a 37-yard field goal, followed by OT Levi Brown recovering a fumble and returning it 2 yards for a touchdown. In the third quarter the Saints fell behind when Feely got a 44-yard field goal, followed the 4th quarter by Feely's 29-yard field goal. Then FS Kerry Rhodes recovered a fumble and ran 27 yards to the end zone for a touchdown. Then the Saints replied with Brees making a 35-yard TD pass to WR Robert Meachem, but had more problems when Brees' pass was intercepted by CB Dominique Rodgers-Cromartie and returned 28 yards to the end zone for a touchdown.

How many more yards was Jay Feely's longest field goal compared John Carney's longest field goal?
7