+1, and it is said to be independant of the surface signed? LOL
I don't know one knowledgeable collector who takes autograph "grading" seriously. The grade apparently is based on how dark the ink is an how well it adhered to the surface.
I've seen "10s" in dark spots with almost no contrast as well as rushed abbreviated signatures.
BUT, they ink came out of the pen well... so they are 10s.
My favorite was a Buzz Aldrin AUTOPEN signed photo that was in a slab... authenticated and graded a 10. :-O
This one is closer to a 10.