I took plenty of phsyics and calculus in engineering school, but have NO INTEREST in correcting your math ! I think you're right, there's prob a difference in angle... forces are placed upon the wheel hubs, that's what the anti-sway bars are for... so, I suspect there is a force difference for asymmetric setups that has nothing to do with the angle at the hub/bar, and that this force difference across sides exists momentarily until the load is fully absorbed by the bar as torsion deflection... at that point, asymmetry is a non-issue... before that point, asymmetry may be an issue, but the thing I don't know is for how much time and does that translate into anything the driver would notice... honestly, we can dispense with all this discussion and just try it !!
and of course, worth going back to whiteline and asking them what they found if you're really curious