You could very well be right but I am convinced ARN could have/has a market for one additional SAS US flight. So be it even it were to be a A321. As I have mentioned before it would be interesting to see the figures a normal day regarding passengers connecting to North America with AF/KLM (and Delta), Lufthansa, Swiss, Brussels, Austrian, BA, LOT, Air Canada, Icelandair. I wouldn't be surprised if there are also a few with TAP, Turkish, Finnair, Iberia etc. Not to mention other various airlines through London (American, United, Virgin, Jetblue etc).