WK
I didn't say the 330/343 were inefficient, especially the 330 is good. I always said 2 engines and 2 struts is the design to go, the rest is simply too heavy to be efficient.
As for the yield, I agree again, we're lost. A well loaded A380, where all pax pay their respective seat, must return a good yield. - Inshallah ....
Time will tell, everyone is entitled to his/her theory and forecast.
Mine is on that EK will not operate all 90 whales.
Profit will always prevail propaganda, even in the sandbox.
Place your bets.