I haven't watched that one yet, but my 5, 6 and 7 year olds love Thor, Ironman, captain America and hulk. They're not too bad, but we really only censor sex and graphic or real looking violence.
Yes. My boys have all been marvel fans since they were born. My oldest use to watch the Spiderman movie at 1 year old LOL.. they have all seen the avengers (as well as the other marvel movies). They are 9,7 and 4