Revy's right arm appears injured and intact between shots. During the chase, the arm is intact, during the bullet clash, the arm comes back injured.
Roberta is seen firing into the Benny's car roof. during the pursuit,several bullet holes in the roof are seen, but when the vehicle crashes into the dock, the roof appears dented, without bullet holes.
Dutch mentions that the place where Revy and Roberta are fighting is more desolate than the "Ground Zero in New York." Since the story is placed in the mid 90's, the attacks on the World Trade Center, had not happened yet.