you can call it overrated but I would say 21 by Adele warrants mention, as does my favorite album of 2011, Ceremonials by Florence and the Machine. Time named No Light No Light the track of the year and the album as the second best of the year. I wouldn't be surprised if she gets nominated for another Mercury Prize although who knows if she will win it.
I think saying Strange Mercy is the best album of the year is a kind of a push for me. It just don't see the progression or evolution of sound from her. Cruel is a fantastic track though.
this is probably my personal pick for song of the year. the studio version kicks my ass every time I hear it and the stripped down acoustic version is a whole other beast.