The Social Network is even more overrated. If you watch that movie and take away the emotional element that the music adds, it's quite average. People latch on to psuedo intellectual banter like it's porn too, which is ultimately why it is so highly praised.
The King's Speech was just good solid script writing with a splash of creativity.
The Black Swan was multi faceted, carrying with it many different elements and emotions. Anyone of similiar physique and half the acting chops of Natalie could have fulfilled the role in an adaquate manner. The overall story, the sound and music and the editing and basically everything else about the movie made it more compelling. Since her character was the central point of the film, she took home the award.
