There have been two fatal crashes on the Northeast Corridor, I believe both leaving Philly, in the last year, but, hey, I guess that's "not that much".
I am a transplant to the area and agree that the only NY influence is hatred of the Giants, Rangers, or Mets. I've never heard this. Ever. They do have a crappy accent, but you could probably figure out what they were saying. That Philly is the 6th borough of NY is the same sort of fiction as "Rocky".
Right now, the Eagles are so bad, this is all the poor city has. They've glommed onto Villanova and will milk this until maybe, just maybe the Eagles make a run. You could make a crack about CT and the Huskies, but UConn has no other sports; Philadelphia has all of the major sports. They would claim to be the 6th Borough if it got them a sniff at a championship or P5 glory because their sports team suck so badly.