Originally Posted by Fraser

At a rough guess given that miles in J/F I'd assume you'd probably earn BA Gold Guest List. 5000 tier points in one year where you earn as follows for travel on AA:
-40 tier points for AA J/F below 2000 miles
-140 tier points for AA J/two class F above 2000 miles
-210 tier points for AA longhaul/transcon in F.

GGLs get sporadic/regular CK treatment at airports depending upon luck (a lot more than EXPs get though! ) and while there are no SWUs you don't use them. You do get "Jokers" allowing you to book anytime as long as a revenue seat is being sold (a few caveats there) for regular mileage levels. Sure there are a lot of other benefits CK get that GGL doesn't but I don't know how many regular AA users are aware of it...

http://www.flyertalk.com/forum/briti...rd-ba-ggl.html
http://www.flyertalk.com/forum/briti...r-s-guide.html