Now, let us assume the best damage doable in my skill level is this amazing black mage, they nailed the entirety of their rotation, didn't drop enochian, and everything went their way. They theoretically did the highest achievable damage within my skill level.
Lets define this Black mage as "X".
At this point we start grading every other class based on "X". Lets now say a monk comes along and does more damage than this blackmage. This monk did (1.04 * X) damage.
This monk now has the best damage, but the Black mage still has superb damage, albeit not the best. Now lets assume we keep going down this way assigning a mental 'leader board' of sorts. Where would NIN when everything goes perfect sit? Somewhere along the lines of (.93 * X) damage.
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