Weakest link in the food chain down to pavement is the limiting factor and we
as outsiders to the design team will never know what that is
Also note that most all the weight added to most any TV will be behind the center
of vehicle. Just look at any TV from the side. Take the center to be between the
wheels, which is normally the drivers door (B pillar).
With a WD Hitch system...'some' of the tongue weight will be WD'd from the
rear axle to the TV's front and a little back to the tongue
It's not just the weight carry but factored with the ability to manhandle that
rated load.
Stopping, maneuvering, getting it going on an incline at altitude and a big ETC
that *ALL* the various components/sub-systems/etc must be able to perform to spec