Just for the argument...
Aircraft Type: MD-11F
Planned Fuel Burn: 208,000Lbs.
Flight Time: 11hrs 20min
Approx. fuel consumption/hr : 18,352Lbs.
Engine Type: PW4460
Clmb to 330/M.82, Crz M.83
According to the manual I've got, average
fuel burn on a 777-200 (PW4090 equipped) is 15,100Lbs/hr, so your numbers really don't match up
At any rate though, we know who won the battle. Besides, whether or not an aircraft is successful (if that is what you're trying to get at) is not totally dependent on fuel consumption. It is other factors like seat cost per mile, cargo/pax capacity, mx costs, reliability of dispatch etc....
Just my two cents worth.