I was long under the impression that BA defines their surcharges and imposes them (where allowed) equally on all partner programs. Now I'm looking at short haul intra-Europe flights, and discovering that the surcharges for the same award flight are much higher when booked with the AAdvantage miles compared to BA's Executive Club. Here's one example with rates in (Econ/Biz): LHR-TXL BA0986 with EC: (4.5K avios + USD 27.50 / 9K Avios + USD 40.00) LHR-TXL BA0986 with AA: (10K mi + USD 65.70 / 20K mi + USD 85.50). Is this discrepancy in surcharges a known feature that I wasn't aware of, or something new? Is AAdvantage justified in blaming the entire surcharge on BA?