Even on something as simple as classical toe correctors there can be differences. Both are classed as classical but one is an exact replica.
This is just an example of a Joseph Pilates replica toe corrector. It has the ability to swivel and the other doesn’t. The Joe replica one has specific spring tension measured to the original one from his own studio.
The pics below clearly show the differences but you can do his original exercises with both of them. One does feel a bit better in my own opinion.
