As a matter of preference, i choose to overlook all that torque bs, its much less relevant than what it appears to be. First off, depends on which conditions that said torque is measured, some manufacturers say "constant current" while others will give a voltage and rpm, to mimic conditions in practice, etc, so the methods to measure that can differ. I think it depends on manufacturer how it wants to present or inflate its torque numbers, and these different measurement methodologies seem to me a little obscure. On the other hand, we know torque will drop off with increasing rpm, so its actually not a fixed number, but it decreases and the limits depend on how fast you set your machine to move. Also as matter of fact, you will have a pot on driver that adjusts the peak current and that is actually meant for the purpose to adjust the torque.
So exactly which torque number you will have at the end, probably nobody will know. But that will change at speed. And to overcome all that, you will manually set the pot at a good point for your machine, that it something you have to do anyway. So that initial datasheet number does not really mean much in the end. Perhaps eventually if you try compare motors made by same manufacturer only. But generally speaking instead comparing torque you might be better off comparing inductance, where a lower inductance would indicate better torque and specifically better torque preservation at increase in speed. That would be almost same thing with comparing torques directly. Other ppls may disagree, but well, this just the way i see it.
So exactly which torque number you will have at the end, probably nobody will know. But that will change at speed. And to overcome all that, you will manually set the pot at a good point for your machine, that it something you have to do anyway. So that initial datasheet number does not really mean much in the end. Perhaps eventually if you try compare motors made by same manufacturer only. But generally speaking instead comparing torque you might be better off comparing inductance, where a lower inductance would indicate better torque and specifically better torque preservation at increase in speed. That would be almost same thing with comparing torques directly. Other ppls may disagree, but well, this just the way i see it.