Hehe, I love seeing other people freak out when trying to control two characters at once in that G&W game... But seriously, the G&W's dual screens had a different purpose than the DS's, namely adding more area to the gameplay as these old systems couldn't depict a changing world (i.e. substitute for scrolling) while the DS has two screens so you can put controls on the touchscreen without obscuring the view on the game area.