I'm SUPER excited for the final DK. It's going to be friggen amazinggg. That said The Avengers was super awesome.. but I feel they're on two different playing fields. IDK, when it comes to superheroes I find it hard to compare movies unless it's the same ones (like Incredible Hulk v. Hulk, Batman Begins/batman/Batman Forever, etc)

I also don't think you needed to see any of the previous movies involving the Avengers members to get any of The Avengers. They covered the basics in the film, I thought (and the girls I went with who hadn't seen any of them understood just fine). Does it add to it? Sure.