Aside from using an eVIP if given the opportunity to redeem/earn AA miles on BA (w/ fuel surcharge) I can't understand why anyone would take AA's dumpy 757 over BA 777 or 747 with better, more professional in-flight service.
Josh
You don't get it, Sir. Willie Walch, the head of BA/IB/AA Joint business, makes these decisions.
On LHR routes, BA will take the high-end passengers, we'll take the commission through AA.com.
AA may even pull out of the LHR F/C market entirely. Use the 777 F/C to less competitive cities in South America.