econgdon-the difference between awards on AA and QF varies a lot.if you want a one way award QF is better as AA awards are for return travel.
A few examples i have seen in 2008(updated for change in AA awards)
BNE-AKL-BNE AA Y 20000,AA J 35000.
QF Y 36000,QF J 72000.
BNE-NRT-BNE AA J 90000,QF J 120000
NRT-JFK-NRT AA J 100000,QF J 184000
But the taxes etc are a lot lower with the AA awards.In June with the awards including NRT the AA extras were~15% of the QF extras,saving a few hundred dollars.
The points you were quoting were the minimum mileages per segment.For longer trips the earn rate is identical.Also if you get to plat or exp on AA you get 100% mileage bonus nearly eliminating the QF advantage.
Beardoc-my card was originally an AMA co branded card.When the AMA switched to Amex DC offered the card on identical terms to those that had it.Pharmacists and vets used to get the same deal.I dont know whether that is still true.