I spoke with the AAdvantage desk with two different CSRs. They both told me that, as far as AAdvantage is concerned, you get credit for flying a oneWorld carrier on a published fare for the 100K bonus even if a segment doesn't normally qualify for AAdvantage miles.

So, I ran the following example for them: Flying AMS-MAN on a K fare on CX will not earn AAdvantage miles. However, you will get credit for flying CX.

This doesn't help Executive members much, but it sure helps AAdvantage members. It sounds too good to be true, so if anybody got the time, please re-confirm it with AAdvantage. Thanks.