AS meals (the full ones) are higher quality than AA IMO. However, AA meals provide more calories. So depending on the person, I think there will be different preferences. AA serves 2x the nuts (I actually think the AA nuts are better), meals like short rib with mac and cheese (vs a nice shrimp linguine on AS) and a massive sundae on flights >4ish hours. The average AA meal feels like 50% more calories IMO.

That said, I’m a light eater and even I think the AS meals are light when it comes to their longest transcons. They are great meals for flights <4h though. I suppose that’s the majority of AS flights so I also understand.