Watford Zeros' description of him as the most frightening human he'd seen sounds about right. He must have been terrifying to defenders: he wasn't that tall - by CF standards - but he seemed to be made entirely of muscle, with a forehead of concrete.
Just looked at his record and he played...
Didn't one of the Brighton managers describe Sir Norman as the best header of the ball he'd seen?
I reckon Duffy would have the beating of him though.
Best forward I've seen has to be Alex Dawson, he could smash the ball with his head (and take opposition with him as well, for good measure)