Alright, found some time to test out harmonize.
Harmonize is a skill that reduces -30 points in every stat category
For example:
Str X + 30
Agi X + 30
Vit X + 30
Int X + 30
Dex X + 30
Luk X +30
With harmonize all status would look like so:
Str X
Agi X
Vit X
So on and so forth.
With PvP/WoE maps, there is a +30 buff to all status, our status now looks like so:
Str X + 30 (base) + 30 (PvP buff);
This gives us
Str X + 60
Agi X + 60
Now with harmonize, it should just cancel out the +30 buff, however, it completely ignores the pvp buff and harmonize decreases 30 points from the original values; leaving us with:
Str X
Agi X
Vit X
In conclusion, harmonize decreases 30 status points on its own, the buffs from pvp/woe and external factors that arent from gear and clan bonuses