Originally Posted by
guv1976
I suggest that you speak with someone in AAdvantage Customer Service. There were recent changes made to the earnings scheme when flying on AA and a few partners, including BA. You will now earn miles and Loyalty Points based on pre-tax fare and AAdvantage elite status (if any). The cabin in which you fly is now irrelevant. Cabin bonuses only apply now to those AAdvantage partners where earnings are based on distance, rather than fare paid.
If you want either of the discounts I referenced, you would have to book from BA. A $16 yearly AARP membership (you can join as an "Associate" member if you are under 50) would get you a $65/ticket discount. The Chase/BA credit-card discount is 10%.
Just make sure you check that the fare difference, if any doesn't negate the discount, I've seen differences as much as $150 in economy between the same flights booked with AA vs BA.
AA's IT and CS are also much better. (For pre-trip changes, day-of you'll be speaking with the operating airline regardless)