Yep. What they said.
I did PE on BA SYD-LHR and LHR-EWR in November last year. Not the most spectacular aircraft, but I was still very pleased not to be in Y. It still made a very big difference to how I felt when I arrived. (Scored an exit row LHR-EWR too, which was nice.) And I thought the food was ok.
PE LAX-SYD on QF however, really did show what BA's version is lacking. Better service, better planes, better food, better pillows and blankies.
(And in between EWR and LAX was a hideous flight with Frontier.:shock: DO NOT!)