terminals at JFK vs. the distance between freeway exits at DFW.
There's also Hartsfield-Jackson (Atlanta's main airport) with its six concourses and a train inside running between them. I once had the "pleasure" of having only about a 25 minute layover in ATL, landing at concourse one, having to wait for a train, getting off at concourse five (IIRC, and I may not, concourse 6 is usually international flights) and having to sprint to my gate, whereas upon arriving, I found out they were holding the plane for me. I got a LOT of dirty looks from my fellow passengers, despite not having been technically late for my second flight.