The real competitor of A380 is B777-300ER. IIRC, A380-800 has roughly similar range (isn´t it slightly longer?), 120 % fuel burn and 170 % seat capacity of 777-300ER.

I’m very curious as to how you obtained the 120% number. I was under the assumption that the block burn per hour on the A380 was about 29-30,000 pounds versus the 777 at 18-19,000.

I don’t see how you could be talking about burn per seat as the A380 must have a much lower burn per seat than the 777.

More details about the 120% please.