You’re conflating two separate issues and using imprecise terminology.

You mentioned 001 stock in your previous post. Plating is 100% irrelevant to AAdvantage earnings.

Essentially, all that matters is marketing carrier, fare basis and operating carrier. It doesn’t matter if it’s a 001 or a 016 or a 157 ticket. As long as it’s marketed and operated by an appropriate carrier (AA, BA, AY, CX, etc), it will earn EQD and EQM with AAdvantage.

When flying an AY marketed flight and crediting to AA, you earn based on the AY partner earning chart on aa.com. Regardless of which airline issues the ticket.