Originally Posted by SuperT
There's no mandate saying they have to release it in the summer. Look at Thor, The Hunger Games, The Hobbit and the next Captain America. They've all proven that you don't need to release a blockbuster within the traditional release window. A summer release date doesn't guarantee a big success.
April and November are great options as well with less competition. The summer slate is just becoming way too packed.
And as if the X-Men movies have the same strength as those other movies. Lets be real. And since you mentioned Thor, that movie is doing not so well in the United States. I imagine it would have performed worse if it didn't get the so called Avengers boost.