"I would rate keeping AA ExPlat ahead of QFP or BA Gold in terms of mileage awards, particularly as you have QC membership."
Pardon? Who mentioned KEEPING AA EXP here? I agree, EXP would be good to retain, but it isn't even an option here.
paul4471 is a
oneworld nothing (sorry paul, don't be offended by that!

) so therefore he is looking at GETTING status, rather than RETAINING it.
What I would be looking at here is the ability to retain AA PLAT in the years ahead, as well as how strictly AA enforce the requalification standards. I would then be comparing that with what status QF will give me after these flights, and how easily I will retain the SG status (equivalent to AA PLAT).
Too many issues here to go through though, but it is nowhere near what you are portraying, namely "keeping AA ExPlat".
Dave