I don’t buy his statistics, I buy how the blade cuts and feels on my face.Also in the explannation you can see this on the web site :
I think it has been demonstrated that most blades are usually sharper on the second shave as per these tests : RAZOR BLADE SHARPNESS TESTING where we can see that on the second shave most of the blades are sharper than before the first shave.
All of this makes me even more suspicious.