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Guide: Hit Rating, Spell Hit, & Expertise
This is not my work. The original article may be found at http://forums.worldofwarcraft.com/thread.html?topicId=5103811788&sid=1
Hey all! I know with the introduction of Expertise with the last patch, many of us are wondering exactly how it benefits us, if at all. While I was piecing things together, I figured why not go all out and include the always asked Hit Rating stats as well. Soooo..here we go!
This thread covers pretty much everything you need to know about Hit Rating, Spell Hit, and Expertise across all the classes and how certain talents affect them.
Tag it if you like, copy/paste it into your own forums, and if you think it's worthy enough, report it as a sticky.
Also, even though I think it's pretty much done, if you know of any changes or if I put something down incorrectly, please let me know so I can keep this updated and current as much as possible.
Note: These charts are derived from Elitest Jerks and WoWWiki models. You can find them here:
http://elitistjerks.com/f31/t18865-working_theories_theorycrafting_2_3_a/
http://www.wowwiki.com/Formulas:Weapon_Skill#Chance_to_Hit
When you are fighting, you often might see in your combatlog that you missed an attack. This can happen with just your normal (white) attacks or with your special (yellow) attacks.
Obviously you want to miss as little as possible or not miss at all, because a missed attack is an attack that didn't deal any damage at all.
Some information about +Hit and Expertise:
* Any player or mob has a 5% base chance to miss.
* Any mob has a 5% base chance each to dodge, parry and block.
* A player hitting another player, or a mob hitting a player, only gets 0.04% miss chance per point difference.
* +hit is the only way to reduce miss chances.
Agility and Intelligence do NOT help to-hit.
* Expertise is the only way to reduce parry and dodge chances.
* Miss and Dodge chance can all be dropped to 0% (unless you're a caster, then miss chance can only drop to 1%). Theoretically speaking, Parry can be dropped to 0% as well, but at a much higher cost to Expertise.
Applying these formulas gives the following base miss rate against the appropriate mob level:
* v. Level 70 mob: 5.0%
* v. Level 71 mob: 5.5%
* v. Level 72 mob: 6.0%
* v. Level 73 mob: 9.0%
Also, in applying these miss rate formulas, fractional Skill levels are dropped, not rounded. So, say you have are a Level 70 character, and you equip a piece of gear that gives +15 Expertise Rating. In theory, this equates to 3.8 +Expertise. And, in theory, Blizzard could have used the fractional .8 in its subsequent calculations of hit and miss, or, perhaps, rounded it to 4.0. But it doesn’t work that way. Instead, the fractional .8 Expertise is simply dropped altogether. You get 3 Expertise for purposes of all Parry and Dodge calculations.
+Hit Caps for Bosses
Hit rating, expertise rating, and spell hit rating are one of the best ways to increase DPS against raid bosses. As raid bosses are considered level 73, you have a much higher chance of your attacks missing than normal. Additionally, hit rating tends to be a "cheap" stat when gear is itemized, meaning that an equivalent amount of hit rating usually does more for your DPS than the same amount of critical hit rating.
However, eventually you have enough hit rating to never miss the boss, and accumulating more hit rating is unnecessary. This is usually referred to as hitting the "hit rating cap".
I have split the following three posts into:
Melee Hit Rating
Spell Hit Rating and
Expertise Rating
Hey all! I know with the introduction of Expertise with the last patch, many of us are wondering exactly how it benefits us, if at all. While I was piecing things together, I figured why not go all out and include the always asked Hit Rating stats as well. Soooo..here we go!
This thread covers pretty much everything you need to know about Hit Rating, Spell Hit, and Expertise across all the classes and how certain talents affect them.
Tag it if you like, copy/paste it into your own forums, and if you think it's worthy enough, report it as a sticky.
Also, even though I think it's pretty much done, if you know of any changes or if I put something down incorrectly, please let me know so I can keep this updated and current as much as possible.
Note: These charts are derived from Elitest Jerks and WoWWiki models. You can find them here:
http://elitistjerks.com/f31/t18865-working_theories_theorycrafting_2_3_a/
http://www.wowwiki.com/Formulas:Weapon_Skill#Chance_to_Hit
When you are fighting, you often might see in your combatlog that you missed an attack. This can happen with just your normal (white) attacks or with your special (yellow) attacks.
Obviously you want to miss as little as possible or not miss at all, because a missed attack is an attack that didn't deal any damage at all.
Some information about +Hit and Expertise:
* Any player or mob has a 5% base chance to miss.
* Any mob has a 5% base chance each to dodge, parry and block.
* A player hitting another player, or a mob hitting a player, only gets 0.04% miss chance per point difference.
* +hit is the only way to reduce miss chances.
Agility and Intelligence do NOT help to-hit.
* Expertise is the only way to reduce parry and dodge chances.
* Miss and Dodge chance can all be dropped to 0% (unless you're a caster, then miss chance can only drop to 1%). Theoretically speaking, Parry can be dropped to 0% as well, but at a much higher cost to Expertise.
Applying these formulas gives the following base miss rate against the appropriate mob level:
* v. Level 70 mob: 5.0%
* v. Level 71 mob: 5.5%
* v. Level 72 mob: 6.0%
* v. Level 73 mob: 9.0%
Also, in applying these miss rate formulas, fractional Skill levels are dropped, not rounded. So, say you have are a Level 70 character, and you equip a piece of gear that gives +15 Expertise Rating. In theory, this equates to 3.8 +Expertise. And, in theory, Blizzard could have used the fractional .8 in its subsequent calculations of hit and miss, or, perhaps, rounded it to 4.0. But it doesn’t work that way. Instead, the fractional .8 Expertise is simply dropped altogether. You get 3 Expertise for purposes of all Parry and Dodge calculations.
+Hit Caps for Bosses
Hit rating, expertise rating, and spell hit rating are one of the best ways to increase DPS against raid bosses. As raid bosses are considered level 73, you have a much higher chance of your attacks missing than normal. Additionally, hit rating tends to be a "cheap" stat when gear is itemized, meaning that an equivalent amount of hit rating usually does more for your DPS than the same amount of critical hit rating.
However, eventually you have enough hit rating to never miss the boss, and accumulating more hit rating is unnecessary. This is usually referred to as hitting the "hit rating cap".
I have split the following three posts into:
Melee Hit Rating
Spell Hit Rating and
Expertise Rating