Originally Posted by NM
I don't know what options CX's FF prgram offers for upgrades.
Upgrades are one of the strengths of AsiaMiles. They are available on: Aer Lingus, American Airlines, British Airways, Cathay Pacific Airways, China Eastern Airlines, Dragonair, Swiss International Air Lines Ltd, Vietnam Airlines.
Another advantage of CX Elite status is access to AA lounges in the US when travelling on international itineraries.
However, AsiaMiles / Marco Polo Club has significant weaknesses compared to AAdvantage: primarily that there are no elite status bonuses (which reduces earning power by almost 50%), no lifetime status, and the possibility to go from top-tier to nothing immediately if you have a low mileage year (rather than just dropping one tier per year on AA).