It cam out October Second 2009. A two year old album outsold everything else. That's just some depressing stuff. (not that people bout Mumford and Sons, while not a personal favorite I still see why people like it, just that four bands - Nickelback, Coldplay and Foo Fighters (arguably the three biggest current rock bands) and Foster the People (spurred by a crossover hit) managed to sell half a million copies during the whole year (Born This way sold over a million in a *week*) )
Nickelback just put out their album in what...November? Give them time to break it out.