Magician %/s (KMS FLY 2 & GMS Dawnveil)

%att is a multiplier just as %total damage and %boss are multipliers. JoeTang Factored in the 50%m.att for elemental amp for f/p's and i/l's as a 1.5x multiplier (50%m.att).

The bolded is obvious. %stat is a multiplier as well (though it's only directly proportional for %all).

Anyways, if %attack is included, then there should be a column for additional %attack like there is for %boss/total. The numbers would have more meaning if %attack from skills/passives was divided out from the %/s and mentioned separately for each character. At the very least, the instructions in the OP should be revised to mention %attack being included in %/s, as

(4 * Mainstat + Secondarystat) * TotalWeaponAttack / 100 * %/s

implies that %attack would be used in calculating TotalWeaponAttack.

In short, %/s should mean a character with adjusted range, x, will do x*%/s damage per second. This is how it is described in the OP, and it seems to hold for classes without %attack from skills/passives. For characters with %attack, the listed %/s are much higher than they should be.