I wonder how many seats per day average and what sort of yield, also how many other agreements have been done on the route. BA do know what they're doing with corporate agreements (they wouldn't have even ordered the A318s without having such in place) but the yield they can strike must be well down on a couple of years ago.
32 flat beds Club World only; 2 flights per day.
Consider the average Club World fare (even discounted for corporate schemes), 3 cabin crew, 2 flight crew and far, far less fuel (32 bags in hold)...probably highly profitable if it works out.
I would guess a 50% profit margin would not be out of the ordinary if it were full.