Quote Originally Posted by Freyyy View Post
+20% defense isn't the same as 20% flat damage reduction. I don't know the maths behind this but appearently 20% defense equals approximately 6-7% damage reduction.

Anyway, great guide Xeno, as always. Still having that horrible room tho
Defense is a very flat line function, and very shallow at that. Every point of defense reduces damage by a 0.0x%. It was ~0.035% per point of defense at level 50. So something like 915 defense (What tanks had at ilv130 with protect) is 40.53% (which is why tanks seem to take half the damage per hit compared other jobs), foresight increased damage reduction to 48.64%. Equaling 8.11% damage reduction.

Sources for calculations used can be found here.

Defense probably lost some value now that we are level 60. But it should still be as linear.