I don't think it's so much that the Marvel movies turn out bad. The Marvel comics have been going on for decades and decades and have developed so many storylines and changed in so many ways, that the fans all demand different things. Also because they have so many hardcore fans, it's difficult to please them while at the same time making something that will do well in the boxoffice and please the general public. For me who's someone who recognises the names for a lot of these Marvel characters and don't know much else about them, I've actually enjoyed all of the recent movies (from Blade and X-Men on, though Daredevil could have been a helluva lot better). I didn't care for the Dolph Lungren Punisher from the 80s or Captain America.

Hellboy's a much easier conversion because there isn't a whole crap load of comics spanning 50 years of Hellboy. That makes it easier to keep very close to the original comics while still being able to take a few liberties to give it some overall appeal. And because Mignola's not a pompous stuck-up jerk like Todd McFarlane, the Hellboy movie's a helluva lot better than Spawn (gag).

I know next to nothing about Punisher (since it's Marvel and I don't tend to read Marvel), so as long as it's a good movie overall, I'll probably enjoy the heck out of it.