The WHS-3200 is really designed for large demand installations where multiple units would be installed. Many of these type of installations would have 3 to 4 WHS-3200 units. That would get rather unwieldily to have a set-up with 6 or 10 WHS-2000s. And they do allow the use of larger wood.
They are more than twice the cost of the WHS-2000, partly because the 2000 is built with robotic welding jigs and is easy to maneuver. The 3200 is constructed from higher priced steel components, purchased in smaller quantities and requires bigger equipment to roll the heavier gauge steel, doesn't fit on the laser cutter, higher and larger cranes, bigger forklifts, etc.... every step in the manufacturing process requires more effort and more expensive equipment.... however, once it's installed.... it's a dream.
There is an obvious advantage of having two WHS-2000s that has been talked about in other posts.... after all... there is a reason that royalty in England always wants an heir and a spare.