I have to admit I was surprised to see a journal starting with bar soaps!
I also know they work, pretty well too considering they arent a true shave soap. Even Dawn dish soap works, but as you've shown, a proper shave soap does do the better job!
The purpose of this (these) test(s) was to verify whether they were soaps capable of providing ENOUGH glide and ENOUGH protection to shave with. And the answer is a resounding, YES.
I also know they work, pretty well too considering they arent a true shave soap. Even Dawn dish soap works, but as you've shown, a proper shave soap does do the better job!