From an engineering standpoint torque is a poor measurement.
If we wrap a wire 360 degrees around a screw and tighten to a specified torque, we have 1/2 of the load (#/sqin) on the wire then if we wrap the wire 180 degrees around the screw and tighten to the same torque. Thus we reach the elastic limit (cold flow) at different torques based on the uniformity of our wrapping.
In the case of plate clamps (backwired devices, large breakers) and ground/neutral bars there is more uniformity in the clamping area and there the torque is more reliable.
-----
Don't confuse the torque numbers used in testing with torque specifications for instalation.
Have fun with your toys.
