Claiming that the BionicMobileAssistant is just a version of the Bionic Handling Assistant is a bit too simple, if we look closely.
The Bionic Handling Assistant is a robotic arm with a hand, mainly for precise movements while staying in place.
But the BionicMobileAssistant is a full mobile system with a ballbot that allows it to move everywhere, which is a huge difference.
It's like saying a delivery car is just a type of crane arm; it ignores the main function of movement.
If we remove the autonomous mobility capability from the BionicMobileAssistant, then yes, they could perhaps be compared more directly, but not before.