I know nothing about this comic. From what I've seen, Miller's stuff has been turning progressively worse and worse since Give Me Liberty and The Dark Knight Returns back in the 80s and early 90s, with some of his stuff from the past few years being utter crap. It seems to me, he's trying to do 'deep' stuff, and not succeeding very well at it.
Maybe this movie will be good, and maybe it won't. As I recall, Miller was involved in both Robocop 2 and 3, neither of which were all that much really (especially #3 *shiver*).