It's not about winning for me, it's about not losing too much for the company.
It seems that common sense may pick up around here. Flexibility is the magic word. I have always said that the 4-legged biggies are not only fuel guzzlers, but they are primarily unflexibel, only viable when full or on very few trunk routes. The slightest slowdown hits them first and hard. The 350 would have been a good choice, albeit without MFF with its fat brother not the best choice (same applies to 777/748).
Logic and today's commercial environment cries for flexibility and the proposed Twin-MFF family 787-8/9/10 and 777-9/X represents the best option.
Begs the question why it took (or still takes) so long to go down that road, the road that many have predicted for quite some time now. May i include myself there???
But again, it's not about winning, please, it's about a little bit of commercial common sense and basic physic.