Hi Wookster, It sort of works out like that, but there is a little more to it.
Brace height is a good indicator, but it really depends on how far back, away from the bow grip, the axles, or cams,are when the bow is at full draw.
Imagine a straight stick with a long elastic string on it, like a bow with shock cord. If you try to torque the grip, there is very little to resist that torque.The handle just twist in your hand and the limb tips twist a little too.
Next take a bow that is short like a hunter bow, but capable of being bent way beyond the normal range.It could have a long draw length even with a short string, as the limb tips are a long way back from the bow grip. At full draw any attempt to torque the grip will also move the limb tips way off to one side.A slight pull on the string will exert a force that will easily pull the limb tips back into line and the torque has been corrected.
So, in a bit of a nutshell, two compounds with identical BH could have different resistances to torque.It would depend on how far back away from the grip,the cams or axles move during the draw.Parallel limbs don't move back very much.Old style up and down limbs move further back and offer more resistance to torque.
If both bows had equally parallel limbs, then the high BH bow would resist torque a bit more; at the same draw length and holding weight.