The vorsprung is a position sensitive and speed sensitive damper that only kicks in, in the last 50mm of travel like the push ACS3.
That is where the similarities end, the PUSH conversion effects spring rate and creates a two stage spring. Meaning that the force of an impact is transmitted back to you during the rebound stage.
The vorsprung damper uses the same principles found on wrc and Baja dampers, the damping is position sensitive and bottom out control is governed by the hydraulics. Using dampers to do this means that bottom out control does not effect the rebound speed and means that rally cars can fling themselves of jumps and land in a nice pillowy fashion without the difficult to control rebound of two stage spring setups.
Steve mentions something similar in the pinkbike comments, but because he’s a terminally nice guy he doesn’t want to be a dick to PUSH.
I have the PUSH kit, it’s good but incredibly sensitive to minute changes in air pressure in terms of bottom out control and it also feels like a bit of a bodge compared to this kit. The vorsprung kit is giving you functionally similar technology to what is found in EXT mtb and rally car dampers.