I tested the following 833 spell critical bonuses and got the following crit increases:
- Mother's Sorrow 4 piece bonus: 3.8%
- Zaan's 1 piece bonus: 3.8%
When I check the 5 piece bonus of Mother's Sorrow I get: 18.7%. Some basic math leads me to 1924 / 833 = ~2.31. So I expected something like an increase of 3.8 * 2.31 = 8.78%. But instead I get 18.7%? That's more than double. That also exceeds any secondary effects in case I have forgotten them.
Can anyone confirm this?