It is not super clear exactly how far they've taken the kinematics. But the physical system is simple enough that it should be possible to develop a very sophisticated and responsive system.
For each leg, you've got two motors per leg, and each motor just has two variables: angle and torque. Then you just have a 6-axis IMU for the chassis itself. All that tells you everything you need to know about the body and leg position, and the terrain you're standing on. I'd say that's way easier than a typical legged robot.
Consequently, it should be easier and cheaper to implement a given level of capability.
For each leg, you've got two motors per leg, and each motor just has two variables: angle and torque. Then you just have a 6-axis IMU for the chassis itself. All that tells you everything you need to know about the body and leg position, and the terrain you're standing on. I'd say that's way easier than a typical legged robot.
Consequently, it should be easier and cheaper to implement a given level of capability.