Even though the Supreme Court's rulings in McDonald v. Chicago & D.C. v. Heller were similar what was a key difference between the two cases. Responses The decisions of the two cases were not the same. The decisions of the two cases were not the same. One case dealt with the 2nd Amendment while the other dealt with the 14th Amendment. One case dealt with the 2nd Amendment while the other dealt with the 14th Amendment. One case was a state issue which required incorporation while their other was federal issue which did not require incorporation. One case was a state issue which required incorporation while their other was federal issue which did not require incorporation. Once case dealt with hand guns while the other dealt with assault rifles