MrHMSH wrote:So they are, however the point of the A359, 789 and 777X is that they will lift a lot more than the 78X after a certain point, and that point is maybe around 4000nm or so. There is no shortage of flights over 4000nm, I counted 18 from BA alone off the top of my head. I wager that in BA's fleet you won't see it go to S. America, Southeast and Northern Asia or South Africa, these aren't insignificant markets for BA. In general don't forget that the 789 and A359 open up lots of new, longer routes that weren't viable before, the 78X won't really compete in that space.
The A380 will be a mainstay of HKG, SIN and JNB. The A350 could happily do South America and Cape Town, the 777-300ERs offer flexibility leaving the 78X to do pretty much what the super hi-J 747s do today: ORD, BOS, JFK, IAD, PHL, RUH, DXB, LOS etc. BA has no need for the 78X on the markets you (almost certainly correctly) predict it won't be used on because there are enough A380s, A350s and 777-300ERs to cover what the 78X can't do so well. It'll beat anything on those current super hi-J 747 routes.