Originally Posted by stephem

I think people may be making some incorrect assumptions based on what Google Flights displays, which in my opinion is rarely rock solid info, and how these would actually ticket and thus earn.

Let's look at the fare(s) here, they are AA fares, not BA fares. The rules are pretty straight forward, either AA coded/BA operated or BA coded/operated on the first segment to LHR and the last segment back to ISB. But the overwater segment must be AA code/operated or AA coded/BA operated. Despite what GF incorrectly displays, you cannot get BA codes on all four segments and that will impact your earnings because AA is nowhere near as lucrative as BA in F. To add insult to injury, you can only get J class on the ISB-LHR and LHR-ISB segments, that will further reduce earning potential of this fare when credited to Alaska.

The BA coded/operated flight in J class would get you a RDM multiplier of 350% and a qualifying multiplier of 250%. So outbound and return of that segment is 26,320 RDMs (3,760*3.5 each direction). And EQMs would be only 18,800 for those segments to/from ISB,
The AA coded/BA operated flight in F will only net you a RDM and EQM multiplier of 2x (100% CoS bonus for F applies to both redeemable and qualifying miles). So outbound and return is 18,840 RDMs/EQMs (4710*2 per direction).

If we sum those up, we get 26320+18840= 45,160 RDMs and 37,640 EQMs

By the way, you cannot even get this $3500 price if you ticket with the BA codes on the 1st and final segments, that will actually push the price up to $39xx. That is because you will have to pay a YQ/YR for both the AA coded flights ($350) and the BA coded flights ($376), whereas all AA codes only triggers a single AA carrier imposed surcharge. And with AA codes on all flights, it will further drop your earnings only a 200% multiplier for both RDMs and EQMs. So totals drop to 33,880 RDMs and EQMs.