Combat advantage and critical severity damage increase

rayrdan

according to this site:
http://janne.coreside.com/mechanics/crit-ca

we can get easily % of damage increase from critical severity and combat advantage in several cases

now assuming my current bonus is 150 considering everything (charisma, boons, stats, base combat advantage bonus) with a vorpal i would reach 200%.
so i put 50 points in the graph and look at the x axis (at 150 current points).
The result is 20% when i was expecting

(200-150)/150 = 33.3%

what am i doing wrong? 0.0

michela123

It’s a common mistake. You should calculate it this way:

Normal hit: 100
Critical hit with CA: 100+150

(300-250)/250 = 20%