SWH,
It's just a real shame that captain didn't just stay on the Airbus!
As for the 777, It is ten times the aircraft the 330/340 is. Our first are almost twenty years old and have worked hard, yet they still fly with rarely an MEL item in the book when you turn up at the aircraft. Also, the oldest 777 and the newest ERs are basically identical in the flightdeck.....they built it right in the first place and have no need to change anything. Airbus can barely keep aircraft built in the same month the same.
As for the 350, well, good luck with that when it is up against the 777X!