Differences between the Pro and the older Super are the addition (to the Pro) of a selftimer, double set of winder contacts, curvy plastics, lower winding gear ratios, an automatically set, 'leaf shutter safe' speed with the N/L leaf series lenses (when in 'leaf' mode) and a flash ready light in the Pro AE2 finder. The Pro loses the Super's all important 1/60th of a sec. batteryless shutterspeed by the addition of a self timer at that setting. All of the motors, backs and prisms are interchangeable between both cameras and the metering is exactly identical.
