I'd disagree and say critics tend to be happier with comic book movies than fans are. The Raimi Spider-Man movies and Singer X-Men films were panned to shit on every superhero online message board, yet were raved about by critics.
Obviously, I'm referring only to the first 2 Spidey films.
I don't know. Most of the fans I know really liked the first couple Spidey and X-movies. X2 is still one of my favorite superhero movies.