Keep On Going!!!
This is quite interesting. Especially about the Flagship Lounge. I perceived it to be much better than what you experienced (AA sure does tout the hell out of it).
I have only flown AA twice internationally recently, both in business. One ORD-BRU (767-200), and DFW-LGW (777). Overall, their service, while nice, didn't even compare with a recent LAX-LHR on BA (business). I will go out of my way to fly BA going to Europe any time over AA. Don't know of better alternatives to South America, however. Anyone?