Let me ask you more experienced flyers the same question about the Airbus A321. Delta's seatmap would seem to indicate that 13E and 13 F have a bit more exit-row legroom, and that 14D has a good bit of extra legroom because of the missing seat in front. Am I right on this?
[Fwiw I'm looking specifically at DL 1890 DFW-ATL, though I see the same thing on several other flights I've booked.]