"SonomaProducts.com" wrote in message
way a heavy motor sliding around on some bars with the inertia forces
and resitance of the cut are going to allow that machine to cut as
accurate as motor in a trunnion having material slide slow past it in
solid cradle (sled).

There's a flaw in your argument. The possible lateral movement of the
sliding mitre saw is matched by the possible lateral movement of the sled
moving in a fixed mitre slot on the table saw. All things being equal, if
both are properly adjusted, the differences between the two tools should be
negligible and either can be used in my opinion.