If AAdvantage members are upset about not having access to FCL on CX, it looks like they will have more to be upset about in the near future. As I've said before, just wait till Mr Parker and his team get their hands on the FFP. I take it with a grain of salt for now, but you can see the direction they're headed to with that chart.
http://www.milevalue.com/cathay-paci...irlines-miles/
I"m all for CX doing this....taking care of their own passengers first. If I wanted unlimited upgrades on US domestic flights and good redemption rates, I'd bank my miles with AA.