Well Busker Busker did something different, they were the first indieband to truly go mainstream in the korean music scene. Which is a great achievement for them and indiemusic. Even thou I did like EXO better.
Super Junior winning anything is just silly fans, Big Bang should've got that, + Kara didn't really have any large competition on the global scene
Super Junior, they're just being feeded by the fans.
But.. Psy did have song of the year, there is nothing to say against that. Even thou the dance and music video made up for it.