personally, i thought karan was awesome. and yeah, his acting was so intense, everyone was lost in the emotion of the song. look at even the judges faces in the middle of the performance. vaibhavi looked it too (unless that was a face of disappointment, but it didn't look like it). so i don't know why she criticized him and gave him less marks.
guess all the guys are just awesome dancers. hey, i miss vikas, wonder how he would have done.