Two main points to take from this super cool mash up of just about every superhero movie ever: firstly, there were a lot of superhero movies in 2014. A lot. Secondly Superhero movie trailers have become so generic that each movie is indistinguishable from the last, to the point where it's almost impossible to tell when one movie ends and another begins in this mash-up.
Regardless, there's a lot to love in this mash-up to end all mash-ups. For one, the editing is seamless and blends all the best trailer-like moments from 2014 biggest blockbusters. It's extremely fun to watch.