I've asked myself the same question the same time over and over again. the only reason why i would go against BA is that, when travelling in the cheaper booking codes you more frequently than on SAS earn less points. but they do benefit from a wider network and a better business product. although with willy walsh one could see changes that are not neccessarily the ones you want intra-europe.

but for business they are frequently cheaper than sas, or more or less always cheaper. their upgrade feature is a great benefit to their website. sometimes its even cheaper in business than in economy even with saturday night stay. we must benefit from it not being the primary nor domestic market but yet a high-income one. or something like that.