Originally Posted by
Cloudlake
I can't open the link you provided, so I have no idea to what comment you are referring, but yes, there is a definitive answer. And yes it has been much discussed.
From the wiki:
"In previous years, points earned on flights marketed by partners would earn points. That is no longer the case. As of January 2007, only flights marketed by AA (with an AA flight number) will be eligible for earning points that count towards the completion of a challenge. You can still fly on non-AA metal flight operated by a partner, but you must make sure that you have booked an AA flight number for the flight. "
http://flyerguide.com/wiki/index.php/Challenge_%28AA%29