Interesting post although strength is only 1 dimension to describe wool, the others being diameter, length, crimp and luster. My understanding is that wool is great for tailoring because, like hair, you can shape it with heat and steam. A lot of the shape you get from the coat is via pressing not just cutting. It would be nice to know if there is an objective way to measure the ease in which you can shape cloth other than going by the crimp.
Also my understanding of the criticism of high supers is that a lot of the wool so brittle that they have to be woven so tightly that they are not so malleable. I imagine high supers with both strength and malleablity are rare and expensive.