I too have a 45S, and find that the filtration match closest to a grade 2 paper is about 30M which does not agree with the table above. In addition, going up to 200M does not give me the big contrast boost I expect. It goes up, but I would give it about a 3.5 or 4, not a 5.
Before anyone says, "hey, your filters are bad" or some such, I do regular color printing and the filtration behaves normally for color paper. Also, measured density changes on-easel seem to be correct.
PE