I did some gorilla style testing on the gneiss leeches in Konschtat-A.

At 100% Tp with out MAB and and only the +40 i get form cruor buffs cloudsplitter does about 700 damage and at 300% it does about 1000 damage. Notice i said "about" and i'm going to say it a lot. I'm rounding UP to make the math easier. ~I'm lazy

So lets say your not normal and save up 300%tp every time you ws if you use ultimate, lion, and blinding horn that's a total of 120% that brings you to about 2200 damage. now lets add a novio +7 hecate's +6 and an ugly pendant +8 for 21 more MAB brings the ws to 2410. Now lets add /blm or /rdm for 24 MAB for 2650 damage. remember these numbers are at 300% TP. 100% TP would be about 1225 damage. based on what saevel said about MAB the damage would be less, but i'm not even going to pretend like i know how to calculate MAB perfectly :P

With this setup you sacrifice all your dd atmas on war and only gain 10% triple attack. The crit rate from using RR or GH alone would trump this in WS and melee damage. For bst you sacrifice dd atmas or pet tanking/dd atmas, if your pet is worthless you might as well be on war.

Basically out of all my QQ ing what I'm getting at is this ws isn't well designed for the jobs its given to as an empyrean WS and i don't see the purpose for its existence(unless war QQ'ed a lot about not having primal rend), and please don't say its great for brewing that's obvious, but I shouldn't have to spend 200K cruor to not regret making this weapon.