Don't think they're upset, just increasing capacity to cover connections from all the new service to Asia that is beginning this summer. NRT is going from a 333 to a 744 and HND and PEK service is starting with 76W's so you have the potential of 500+ additional passengers needing to connect. Add the second daily 333 RT to AMS and you'll need a few more planes if AS wants to have any seats left for their own passengers.