You're comparing various features from Crysis 2, to real life? That is pathetic dude.
@OP, learn how to utilise it properly and stop complaining. If Crytek made the AS that easy to use, all you would see are bunnies that slam into the ground after each jump. However I do agree that some sort of disorentation effect would be good if you a hit by the "shockwave" from a few feet away.