The damage that you take from a boss is the damage *after* mitigation by your armor. Effective Health is the damage that you are able to take *before* mitigation. This is important because comparison of Effective Health is the easiest way to compare Time-To-Live between two tanking setups. There are of course other ways, but Effective Health uses a common denominator (Effective Health and Raw Damage) to expedite this comparison.
Using the HP/armor model of Effective Health (ignoring block), the following scenario just barely results in death:
Post Mitigation Damage = HP
Post Mitigation Damage is calculated by:
Post Mitigation Damage = Raw Damage X (1-Mitigation Percentage)
Substituting in HP for Post Mitigation Damage and playing around with the equation gives:
Raw Damage = HP / (1-Mitigation Percentage)
This is the amount of Raw Damage (ie. before mitigation) that will kill you, also your Effective Health considering only HP and armor. Warriors also have a multiplicative 10% damage mitigation from Defensive Stance and Paladins have 6%, therefore:
Post Mitigation Damage = Raw Damage X (1-Mitigation Percentage) X (1-0.1)
Raw Damage = HP / ((1-Mitigation Percentage)X0.9)------> Warrior
Raw Damage = HP / ((1-Mitigation Percentage)X0.94)-----> Paladin
Raw Damage = HP / (1-Mitigation Percentage)------------> Druid
Last edited by Finelle; 01-15-2008 at 01:56 AM.
"I played hard to avoid mistakes, but now I can play hard to capitalize on opportunities." -Arold, on the 3.0 Protection Warrior.