1 - Improved Corruption

Spell Rankings:
http://wotlk.openwow.com/spell=17810
http://wotlk.openwow.com/spell=17811
http://wotlk.openwow.com/spell=17812
http://wotlk.openwow.com/spell=17813
http://wotlk.openwow.com/spell=17814

Description: "Increases the damage done by your Corruption by x%, and increases the critical strike chance of your Seed of Corruption by y%."

Problem: The calculation in damage offered by the spell talent in corruption, is below promised by the ranking.

My test

Character Status:

No points in this talent is the base damage:

1 Talent Point: 2% buff

Note: Note that the buff says the corruption of the damage is expected to increase 2%. However the test he increased approximately 1.6%.
value in the test : 1007 + 1.6% = 1023.11
value that should have been obtained: 1007 + 2% = 1027.14

2 Talent Point: 4% buff

value in the test : 1007 + 3.2% = 1039,22
value that should have been obtained: 1007 + 4% = 1047,28

3 Talent Point: 6% buff

value in the test : 1007 + 4.8% = 1055,33
value that should have been obtained: 1007 + 6% = 1067,42

4 Talent Point: 8% buff

value in the test : 1007 + 6.4% = 1071,44
value that should have been obtained: 1007 + 8% = 1087,56

5 Talent Point: 10% buff

value in the test : 1007 + 8% = 1087,56
value that should have been obtained: 1007 + 10% = 1107,7

The tests were performed on Heroic Dummy Ironforge (the military ward) with curse of elements in the Dummy.
I did not use any proc item not change results

TrinityCore rev. 5bd7c29 2015-05-13 22:29:49 +0200 (3.3.5 branch) (Win64, Release)