Did you read wookster's post? He compared it with several other HT figures and said it wasn't smaller.
Well he compared it to different figures than I did. Dutch's head size may be more in tune with HT other more recent offerings but its definitely smaller than the likes of the Aliens USCM figures, T-800 endoskeleton, Kyle Reese and even bank robber joker.
To be fair its about the same size as other recent figures like Twoface, tony stark etc.