Agreed. But I meant 757 nonstops cost less than 767 and 777 nonstops on the same route. And I was speaking anecdotally, of course.
there aren't too many routes where you can have the option between 752 and a widebody... only a few come to mind...
EWR-CDG
EWR-LHR
IAD-LHR
in my very non-scientific sampling of a few random 4 day trips in the near future, the pricing is the same for all outbound and return flights regardless of equipment on those routes. certainly, YMMV as always.