In agreement with most of the posts. Flew JFK/LHR/JED then KWI/LHR/BOS last June in BA. Seats were tired, footrests wonky, entertainment boxes in footspace caused a nasty bruise. Service on most legs was average, except for LHR/JED where i was the only pax in the class.
In October, did SYD/LAX/SYD in QF Y+. on way over is was the J seats and the food, bevs and serivce was more like J than Y. On way back had the new Y+ seats in a 747 and they were definitely worth the money compared to Y.
Summary - QF wins by a big margin.