Nice vid. Coria was a water bug.
I don't think Nadal was a better claycourt player then, but his racquet-head speed was probably a bit faster than it is today. He may be a half-step slower now too, but I'm not at all sure about that. It's important to notice that this video is stretched sideways. It was originally a 4:3 video that's been stretched into 16:9 format. This makes the court look wider than it really is, and so the players appear faster when moving side to side than they really are.