I have tried all types of safety razors, DE, AC, GEM, Injector, shavette... My answer is that SR provides more angles that can be used. When I used DE ATG, even riding the cap, the blade is still at a slight angle. You have to press the cap into the skin so that the blade can be almost parallel to the skin, but SR can easily do it. At this point, you can even put a little pressure on the spine to be truly non-irritating. When the blade slides on the skin, SR is more tolerant, compared with the DE blade.
SR looks very primitive, but after practice you can shave very well, because you really learn not to put pressure on the razor.