The 777-200ER and A340-300 are very close in operating costs in their base versions.
With the use of payload-range curves for the aircraft we can see that the 777-200ER not only has a higher passenger capacity (six seats, stretched to 30 with the refurbishment), it can also take more payload weight.
Excess weight capability can be used to load cargo but only if there is space available for the cargo modules when passenger bags has been loaded. We check if this is the case.
Finally, we check if the higher purchase price and conversion cost for the 777-200ER can be covered by its earnings advantage.