Ian Keldon wrote:
Splitting the box office is exactly WHY studios typically don't release big films at the same time by "gentlemens' agreement". Blockbuster-scale movies are too big of an investment to risk sending directly up against each other and not getting maximum box office in return.
Also during the summer, studios can get away with releasing a huge movie every single week. They can also release two different big movies on the same day so long as they are going for two very different audiences like... Twilight and James Bond.