I torrented the movie, couldn't even watch it all the way through. Skipped around. There were too many characters to keep track of. The action wasn't good at all for the most part, too disjointed. The characters had stupid justifications for their actions. For example, Tony Stark felt guilty about getting innocent kids killed, so what does he do? He finds a 14 year-old Spiderman and puts him in danger's way. Not to mention, the Spiderman in this movie was sooooo obnoxious. Also, a lot of those guys had no place being there. The flying guy and the guy with a bow and arrows, what are they doing mixing it up with these other guys? In a real situation, they would get merked almost instantly.
I'm not a comic book fan. I'll watch most of these movies and have enjoyed almost everything other than Avengers, but this one was really bad. And about an hour too long.