You've done a lot of research...my guess is the vehicles are pre-production and the calculations have a broad safety range. Until the production vehicles are built and final tests are completed, Ford won't commit. For instance, it seems from what I have read, the MIC hard top color is significantly darker in the latest pre-production models than the first models (grayish in color). The color change indicates the manufacture process of the MIC hardtops has changed (maybe only color), but the final chemical mix has to be tested and the MIC hardtop will have to go through failure analysis. The failure analysis will test the strength, shear, weight, torsion (assuming there is body flex, fasteners, etc. I'll follow your post and the discussions.
7/14: Outer Banks, Eruption Green, Lux Package, 2.7 Eco, Sasquatch Package, Roof Rack, Towing Package, HD Modular front bumper, AUX switches