Quote Originally Posted by JackFross View Post
Potency scales perfectly linearly.
Hahahahahaha...No. No it doesn't. Except when it does, sometimes. But usually it doesn't.

Quote Originally Posted by JackFross View Post
For the record:
x1.1 = x11/10
/0.9 = x10/9

Those numbers are different by 1/90. Doesn't really make much difference, except that dividing by the 0.9 is more accurate, assuming the game works the way it states in the tooltip.
And the former is what all the guides go with, and is probably more accurate. And a difference of 1/90 will start giving you wrong numbers as soon as your damage exceeds 90 points, which was forever ago. Once you're up past 900 damage abilities, you're looking at 10 points off from expected value.