In a relatively short time, Marvel Studios established the post-credits scene as one of its signatures. The approach definitely has its fans, but with just six words, Dark Knight trilogy director Christopher Nolan makes it clear in this Guardian profile that he's not one of them.
When Warner Bros. asked director Zack Snyder to add a comedy coda to Man of Steel, producer Nolan replied, "A real movie wouldn't do that."
That one phrase seemingly encapsulates the growing oppositional nature between Warner Bros. and Marvel Studios' crop of films. The latter embraces humor throughout its films, usually adding on a punchline post- or mid-credits scene to its superhero films -- the shawarma-centric scene that came at the tail-end of Marvel's The Avengers credits being the most notable. Warner Bros., on the other hand, has been rumored to have a "no jokes" policy for its DC superhero slate. While there are a handful of moments of levity in Man of Steel, the tone of the film was widely considered to be much darker than that of any Marvel release.
We will see if Nolan's opinion of the comedy coda sticks around when Warner Bros. starts rolling out its expanded DC movie universe. The next installment, Batman v Superman: Dawn of Justice, opens on March 25, 2016.