I don't think it matters much that Summer 2011 is going to be incredibly busy. So was this past summer. Besides, look at all the other big movies coming out that summer: Spider-man 4, Pirates 4, Tr2n, Captain America, The Avengers, and Cars 2. The big ones are coming out in May (Spider-man 4, Pirates 4, and Captain America), one in June (Cars 2), and Tr2n doesn't have an exact release date yet. The only competition for Batman 3 is The Avengers, which is coming out July 2011, assuming Batman 3 follows TDK and comes out in July again. I actually think studios would be scared going against Batman 3 considering how much TDK is making and not vice versa.