Quoted from Mr_Outlane:
LOL! I don't even know what a torsion box table is?
A torsion box table is like a giant I-beam grid.
It is dead flat, and stays that way. You can't flex it
Mine is 11.5" deep, so I can clamp anything to it and know it will glue up dead-nuts-square
If you build a rolling cart under it, make sure it is the same height as your tablesaw....you will instantly know why
Over the years, mine got covered in glue and gouges, so I pulled it up onto the CNC mechmate, and then ran a surfacing bit over the entire top - dead flat again.