I've been playing around with the new WAR spreadsheet to compare Upheaval with Ukko's Fury and... Upheaval does consistently more damage, even if I use as a weapon a Widowmaker, than Ukko's Fury with a Ukkon 90 (with Blood Rage -old version- down). I've used my current TP gear (minus Ukonvasara on the second set), and what I think is the ideal WS set (or damn close) for each WS. Out of Abyssea, target Buhkis, etc.
I've modified Motenten's crit bonus for Ukko's because he was using the big nerf stats, not the second revision stats.
The question is:
Does this have any kind of logic, or I am missing something evident?
Screenshots with all the details here, set 1 Upheaval, set 2 Ukko's Fury.