dmar, Haye has absolutely awful balance. He nearly falls over when he throws his wide, winging punches.
His punching technique has improved noticably over the last year, he has started throwing straighter, more professional punches. He does have blazing speed and power, but I don't see the footwork that you do(see balance comment)
His head movement is terrible.
He should have lost the Valuev fight IMO. I disagree with your assesment.