The Avengers.
It was really quite good. It lead me to binge watching two seasons of Avengers: Earth's Mightiest Heroes.
I was expecting it to be utter shite, but I went to see it anyway coz a friend wanted to see it and it ended up being my favourite movie of that year. It must've been the most pleasantly suprised I've been by a film in...well ever, probably.
Why else would Marvel be winning the cinema war against DC?
There's a huge gap between the styles of the two franchises in how they handle movies, and you can easily see why Marvel is ahead.
Marvel makes films that are updated for modern audience expectations and composites of existing stories, but are exceptionally faithful adaptations in many senses. Their choices for actors, especially for the major characters, are wonderful. The movies are vibrant and colorful, and have plenty of humor. Romance plots are kept to an absolute minimum to the point where some of their films 100% lack any romantic elements, even the typical tacked-on love scenes that Hollywood often demands. What you get is literally a comic book turned into a movie, merely adjusted for mainstream audiences. The entire series is in the same continuity and references past works, as well as referencing other Marvel content that hasn't made it to the big screen yet. There are multiple strong female characters (Black Widow is arguably the hero of The Avengers despite being less prominent than the rest and has an even bigger role in Winter Soldier), three major black characters, and they're giving individual movies to just about every character they can over time.
DC movies are almost always rather dark and often devoid of humor for the most part, with washed-out colors or relatively dull environments (Nolan's Dark Knight Trilogy is predominately black, gray, and brown and Man of Steel is run through the same filter as Saving Private Ryan). Traditional Hollywood tacked-on romance subplots are commonplace (Man of Steel might be the worst offender, with the attraction coming out of literally nowhere and having zero bearing on the plot or characters). A number of them are darker and edgier adaptations, with Man of Steel once more being the worst offender. There's also a tendency for them to try and reboot instead of continuing onward (Man of Steel and the new Batman v Superman movie is a reboot of both the Dark Knight Trilogy and Brian De Palma's Superman film). They've also taken ages to actually get female heroes out the door, with Wonder Woman appearing for the first time in 2016 and being given less credit (and probably less screentime) than the two major male superheroes, and important minorities are few and far between. To say nothing of David Goyer's recent comments regarding She-Hulk and Martian Manhunter.