Originally Posted by
UAflyerwhoflystomuch
True, but sometimes J is the same on 77W and 757-200 on the SFO-EWR
That is more to do with capacity than a “nice seat”. The 752 only have 16 seats, the 77W has 60. So if 3/4 of each plane is full, chances are the 752 with 4 seats left will be in a higher fare bucket than the 77W with 15 remaining seats.