Isn't it quite reasonable to consider that the BionicMobileAssistant, with its pneumatic arm and hand, could fit into Festo's overall bionic assistance systems philosophy, aiming to imitate biological movements?
However, it would be more precise to see it as a lateral development rather than a simple direct subcategory.
The autonomous mobility of the BionicMobileAssistant, made possible by its ballbot, is an innovation that radically changes its application domain.
A robotic arm on a fixed assembly line has a very different function from a robot that moves to inspect goods in a warehouse, even if both use similar arm technologies.
Reducing the mobile to stationary is a bit like saying a car is just a cart with an engine.