Originally Posted by
char777
For the higher traffic people mover routes from PMUA hubs, the 739 gets the job done at pretty much the same seat count (with slimlines, but still).
Crucially for the premium transcon routes, the 739 doesn't and can't have lie flat seats. The A320 family has a slightly wider fuselage that sees carriers (e.g., AA, B6) configure it with 1-1 lie flat in J/F.
[edit:] sorry, just saw you actually made this same point.