Tier bonus on BA-operated flight bought as AY codeshare?
 

I recently flew LHR-SAN on BA 274, which I purchased on aa.com under an AY codeshare.

Avios and cabin bonus have posted but not the Teir bonus.

I note that the Guide section says:

oneworld partner prefix, oneworld partner operated flight
You earn Avios and Tier Points as per the flight number you have bought. So if you bought a CX flight number on AA metal, you'd earn as per a CX flight.

It doesn't have an entry for "Oneworld partner prefix, BA operated flight". Does the above apply?

You'll earn Avios and TPs based on your AY flight number.

According to what you posted:
You earn Avios and Tier Points as per the flight number you have bought.

So you bought an AY flight number and you get TPs and Avios as per an AY flight. For AY there is no tier bonus as shown under the AY section on this page.

Yes, but it was an AY flight on BA metal. I should earn as per BA, shouldn't I?

No, it's the marketing carrier not the operating carrier or the ticketing carrier. This is exactly what you quoted, you get avios and TPs according to the flight number you bought (AY) not the metal you fly on (BA).

You bought an AY flight number on BA metal so you earn as per an AY flight.