I'll post a review. I've flown plenty of domestic and international first class.....so I'll compare. I'm 6'2, so I can't do more than 3-4 hour flights in regular economy.....the extra room is worth every penny to me.
Review: American Airlines Premium Economy
American Airlines Premium Economy offers larger seats with more leg room. Meals and beverages are improved, for a better flight experiencewww.travelcodex.com
Premium economy:
Domestic first class:
those definitely look quite similar, although looking at this plane (just looked up the dallas to sao paolo 777) seatguru says 18.5" wide - https://www.seatguru.com/airlines/A...an_Airlines_777-300_ER.php?flightno=930&date= while looking at a domestic airbus (ord-lax) https://www.seatguru.com/airlines/A...n_Airlines_Airbus_A319.php?flightno=914&date= first is 21" wide. the 777 in this example (LHR-MIA) https://thepointsguy.com/reviews/american-airlines-772-premium-econ-lhr-mia/ had 17 to 19 for economy to premium economy (not sure if rounding here or what)
in any case, i agree, i'm 6'2" as well, a 7 8 14 etc hour international flight in economy would not be something i'd be looking forward to either, so would scrap or pay for any upgrade.