If holding, say, EP status and flying DFW-HKG in business class

AA cost $5275 base
CX cost $4638

Fly on AA, earn $58,025 miles
Fly on CX earn 17196 miles base plus 4299 COS bonus plus 20636 status = 42,131 miles

In this example , 15,894 more earned on AA. This could be an incentive to fly AA

What AA seems not interested in doing is providing incentives where the rewards given exceed the value of the purchase