neo currently at approx. 60%, MAX 40% overall sales. PW1000G offering additional 2% sfc improvement by 2019 which CFM can't match in the timescale. If the PW engine continues to stay one step ahead of the LEAP, the AB share will continue to grow at B's expense. Already B rumoured to be considering a stretched MAX9 with jacked up gear and new wing to take on the A321neoLR. More likely B will be forced into earlier launch of all new family spanning 150 - 300 seats: common cockpit, systems etc but perhaps two fuselage diameters i.e. taking a 757/767 approach again - worked last time but will incur $10bn - $15bn non-recurring and will have to deliver step change economic improvement over neo - tough call.