Well, the link I just posted from AA website says that they are booked in 'A' and 'P', and the (recently updated) QF T&Cs clearly state that A and P earn as First - so I think, personally, that it is now clearer than ever that the YUP fares are F fares if you are flying as a QF FF.
Have not travelled on one for a while so can offer no more than that, but the T&Cs do seem to be clearly stating that these are viewed by QF as F fares for miles and SCs.
But someone will now probably tell you the exact opposite... !
