Originally Posted by
howyapaul
I am flying SFO to Dublin on 1st August on discounted business class on British Airways, it was ticketed through American, with the AA devaluation starting on the 1st August, which airline FF account should I use, AA or BA to get the best value?
If your goal is extracting the maximum number of redeemable points - BA. Assuming no status, this flight will earn you ~17500 Avios and 280 TP (just 20 shy of Bronze)
Crediting to AA, again assuming no status, this flight will earn you whatever you paid for your ticket minus ~118 Euros in taxes times 5. Assuming the cost of the ticket was EUR1,700, you will get (1,700-118 in taxes *~1,12 current exchange rate *5 non-status multiplier) ~8,800 RDM.
You will earn 23468 EQM, though, so crediting to AA might make sense if you were trying to reach or maintain AAdvantage status.