He is guessing where is opponent is going to move ;) Look between 1:43 1:45 When his opponent stopped moving he started hitting towards air because Vader taught that his opponent was going to move :) btw nice montage :p
Can't tell if you're stupid... Unfair Advantage is just a hacked client/autoclick. It's funny tho, I know most people don't believe it but I was playing legit there, my friend Kevstah got banned aswell.