Darren: That is useful info about the codeshares. Can you clarify what happens if I book on QF when the flight is codeshared?

Example: I book flight QF93 (MEL-LAX) directly with Qantas. This flight is codeshared as AA7349. Do I get 100% miles on AA simply because it's codeshared, or do I get 70% because my ticket bears a Qantas flight number?

Often ticket prices to Aust are cheaper on QF than AA. If I can book with QF but still get 100% mi on AA, then that disadvantage is basically eliminated since most of the non-codeshare segments I would fly on QF are subject to the 500 mi guarantee.