B777-300 compared to A340-300
Base data
4000nm still air distance.
Assumed 50 knot headwind.
Normal reserves (not LHR or island).
100 kg per pax+bags.
I kept the pax capacity the same at 263 so as to better compare cargo capacity – the aircraft are pretty close in pax capacity anyway.
Both cruising at FL370, with allowance for taxi, takeoff and landing.
Not airport limited.
Analysis results
B777-300 with GE engines and max gross weight option
33,676 kgs cargo. Limited by takeoff weight.
A340-300 WV027 variant
14,771 kgs cargo. Limited by maximum zero fuel weight.