The article about the "NY Mansion destroyed by Sinkhole" that Bennet studies at the end doesn't match the headline. It appears to be rather some kind of general marketing analysis.
When Sylar and Matt arrive at the top of the escalator at the airport, Sylar is caught on a CCTV camera, yet the image displayed on the monitor shows minor differences (apart from Matt not being in it and Sylar being in Matt's body). For instance, the black lady with the hat reaches the top of the second escalator a little behind Sylar and Matt, but on the monitor she arrives with Sylar/Matt at the same time. Also, the man walking in front of Sylar has his arm once around his girlfriend's waist and once around her shoulder respectively.
When Sylar (in Parkman's body) goes through airport security, a gun is seen in his luggage by the x-ray machine. Matt remarks that he had caused Sylar to pack his service revolver, but the pistol shown in the x-ray is an automatic, not a revolver.