Thor and Captain America are "Average". Green Lantern was fucking terrible. It's like a hair above Superman IV, Steel and Batman & Robin ironically all DC movies.
I feel like we get into this comic movie stuff at least once every month.
I generally don't like comic book movies at all. Most of the ones the majority of people love I find somewhere between mediocre and abysmal. It doesn't help that I'm almost completely jaded to "movie magic" and the big, wanky, cartoons these movies turn into just does nothing for me. Special effects are no longer special. So all the shit in Thor that happened in Asgard was just about the most boring time I've spend watching film in the last decade.
The type of comic book movies that I do like are good movies first and faithful to the source material second. Punisher War Zone is probably one of the best action movies I've ever seen. The fact that it's based on a comic is incidental to that but I still think it does a fun bit of justice to Garth Ennis' ridiculous take on the character.
Nolan's Batman and Thor, and Captain America are some of the worst examples of wanky, shitty comic book movies. They're overlong, feature disgustingly incomprehensible scripts, pay too much homage to to the source material in lieu of telling a pointed, effective story and are all guilty of movie faux pas numero uno: THEY BORE ME. We got to the third fucking Batman movie and we're down to LITERALLY ~22 minutes of actual Batman in a 3 hour movie?! (I kept track). Even as someone who doesn't like Batman, I would LOVE to see a good 1.5-2 hour movie of Batman beating the shit out of bad guys NON-STOP. Cap could have had its entire first hour excised and I wouldn't have even known the difference because it was akin to taking a nap. Thor spent nearly the ENTIRETY OF HIS MOVIE WITHOUT SUPER POWERS. These movies all suck insane amounts of shit.
Other flicks I evaluate on a case by case basis, like Avengers at the very least was pretty much action packed throughout. The Whedonisms kept it light and humorous, tho the invasion at the end devolved into a bunch of stupid cartoonery (at least there were space whales). I still don't think it's a great film, but it's a better "comic book film," so it got higher marks
Green Lantern was "bad" but I loved how fucking stupid it was, so it got higher marks.
The new Spider Man movie was corny as FUCK, but the central PP/Gwen relationship was so cuuuuuuute (plus dat emma) and I thought Lizard was rad, so it got higher marks.
The first Iron Man was legitimately kind of hilarious, and RDJ killed, so it got higher marks.
tl;dr, comic movies are bad, everything you guys like is terrible and I'm miserable and jaded about everything under the sun.
