Generally speaking, there's not much difference as long as we are talking about the "Aris" models. Aris was a response to Shimano's SIS/HyperGlide indexed shifting system. The teeth of the sprockets were carefully shaped to provide precise indexed shifting.

Early Sachs-Maillard sprockets had three evenly spaced taps on their nonthreaded sprockets. Later Sachs sprockets had four tabs, with one tab offset from the evenly spaced three. Sachs-Maillard 3-tab sprockets could be installed in both the up or down orientation (if installed in the wrong direction the shape of the teeth would be in the incorrect orientation). The Sachs 4-tab sprockets could only be installed in one configuration. This meant the shaped teeth of the sprocket were all in the same orientation.

Shimano did the same thing with their UniGlide and HyperGlide freewheels and cassettes. Shimano used a "zigzag" pattern of splines on their freewheel sprockets which can only be installed in one configuration.

I hope this is helpful and the answer you are looking for.

One thing to keep in mind is that the grease Sachs used on these freewheels turns into a sticky peanut butter consistency. They flooded the interior of the body with grease (as opposed to grease in the races only). NOS Sachs and Sachs-Maillards are often non-functional because the pawls are stuck in the old contaminated grease. Of course a proper servicing can correct this condition and you will have an exceptional freewheel to use afterwards.