User blog comment:ADour/Official title for Marvel's The Avengers sequel announced!/@comment-4651179-20130721032030/@comment-1895174-20130721171614

Which is why it's so weird that they don't have enough faith in the Superman property to make a proper Man of Steel sequel. Instead, they're doing something where Batman, the only hero DC has that can overshadow Superman, will be the main focus of the movie. Heck, they announced this project with a quote from The Dark Knight Returns, when an emasculated Superman gets his butt kicked by a geriatric Batman.

Also, this doesn't build a bigger universe because this is a new Batman. It no more builds a bigger universe than X2 did by throwing Nightcrawler into the mix.