pabely, how do you know wow don't have good figures from STN? I'm not doubting you, would just be interested to hear what figures you have.
Iceland Express is just at STN for the Icelandic peak season. I am however extremely nervous about their long term prospects - the high number of promotions they've been running lately with immediate departure dates says to me they need cash now.
Knowing the market well as a regular traveller, right now I'd put money on Wow being here for the 'longer' term.