The one from "Discount Van Truck" swivels on a single point. Its basically a barrel chair ped. To get that to swivel you have to move the seat back, seat back up, swivel half way, open the door, etc,etc. Good luck getting the driver to swivel with the steering wheel in the way.
The one from Atwood, slides the whole seat on a 45 degree angle towards the rear and center of the coach. So from within the unit (not having to open driver or passenger door) I can swivel both driver and passenger seats.
They are two completely different pedestals. Way more engineering and metal in the Atwood one...because it has to pass a seatbelt test AND slide on a track away from all the obstacles that prevent you from easily swiveling the seat.