Welcome to Flyertalk, Mike.
The proper page to look at when flying
BA is this one:
http://www.aa.com/i18n/AAdvantage/ea...es/british.jsp
It reveals that you will earn full EQM, 1.5 EQ Points per Base / EQ Mile and you will earn 25% bonus miles (redeemable but not elite-qualifying) for flying in C, D, I, J or R.
Just be sure your AAdvantage FFN is entered into your record (Manage My Booking on the BA website can likely do that, and you can probably select a seat as well - 62A or 62K are my favorites, up in the Stretched Upper Deck and with miles
of leg room.