1) You can always call AA and CX and ask for status match.

2) There are many things to say in MPC vs. AA debate, but the highlights are as fellows:

2A) AA miles have a much better earn/burn ratio in terms of ticket redemptions. Example: 60K AA for Y ticket vs. 90K MPC; gets more ridiculous when you compare J and F redemptive mileage requirements between the two.

2B) AA you get life-time membership after certain thresholds (1MM, 2MM), CX you don't, you stop flying they stop recognizing you.

2C) If you are high on op-ups and fly exclusively CX metals, being MPC DM and GO have high priority in op-up over OW Emerald.

2D) AA you get ridiculous amount of "bonus miles" just by being higher in tier, especially when you move up the tier. CX the only bonus miles you get is buying J and F tickets. (Excluding promotions)

2E) If you use AA for domestic American flights, you have more options to upgrade to "First Class", as CX, not as easy.

Many more can be said, but those are the highlights.