Originally Posted by
bubblemonkey
Doesn't more weight with the same fuel consumption make a more economical aircraft? Look at the max take-off weights for both aircraft:
I believe that the Airbus has a capacity of 81000 gal for 8000 nm.
That mean over 10000 gal per 1000 nm. The boeing 747-8 has about 57000 gal for 8000 nm. So there is a big different. More weights mean more fuel is burn!!!