Any truth to the rumour that the yet to fly 747 800 is expected to burn at cruise something in the order of 7 tonnes and hour as opposed to the A380 that burns 13 ?
It wouldn't surprise me, as the 747-400 will get down to about 10 tonnes/hr pretty quickly and then when up around the 40,000' area get down to 8 tonnes/hr. Not much of a stretch to believe 7 tonnes/hr then.
No idea what the A380 burns sorry.