See, this is what I hate about movie trailers. They contain scenes that don't make it to the final cut of the film, or, in this case, they edit scenes to make you think there is a different outcome.
In the real scene, Peggy fires the gun and
Bootleg Batman Begins
: "Bruce found a basement under his villa, in which the equipments turn him into another person: Spiderman. With this mask, Spiderman stroke all criminal activates and criminals everywhere, such as Tougon, the chief of Mafia, Doctor Jackstraw, the abnormal drug trafficker, even a mysterious opponent familiar with him