I think I already know the answer,

Does W class on AA earn any Qantas points? I think not as it is not listed in the Qantas earning points chart next to AA but did a search and could not find it?

Any help greatly appreciated

Having googled W class it seems it earns zero on Qantas but earns 100 on AA, so perhaps I will go for AA platinum.

Does anyone know how this would work all on the one ticket could I credit the the first part below to AA

LHR-LAX-LHR sign up for an AA platinum challenger this would earn 10912 AA miles enough for AA platinum

then the PYUP fares in the middle to QF to requalify for platinum?

I know why have status on two but if I earn nothing on Qantas on the AA fare it seems logical to go for Platinum for $150USD more.