That is probably so. It's the economy of scale. But I wonder how much fuel a fully-loaded A380 has to burn to make a flight? Compared with a 747 or 777?
But the point I feel I need to make, here, is...
...it might do that if you jerks could actually build the stupid thing on-schedule. I mean, it's two years behind schedule, for crying out loud. Even accepting the rather ludicrous claim that a super-massive jet can "save the planet", how can it do that when you can't sell it because you can't build it?