The entirety of the post, if you read farther and before the cut part;
Quote:
motive has shared some details on the calculations of hit and crit chances:
part 1
The way WoW calculates crit rate is over ALL attacks. Crit rate is not based on hits only. In other words, if you have a 5% crit rate, that 5% chance includes misses.
All crit rate adjusting abilities, items, and talents add the flat % to the base % crit rate. So if I have a 5% base crit rate and then use an item or talent that increases that crit rate (let's use Improved Backstab talent for example - +30% crit), my new crit with backstab is 35%.
Regarding how defense decreases the rate of critical strikes, each point of defense that a target has over the attacker, the attacker loses 0.04% chance to crit. So, for example, if a level 60 Rogue is attacking a level 60 Warrior who has 25 defense, the rogue's crit rate will be decreased by 1%.
part 2
+toHit items subtract from your miss%.
So, ignoring all defensive actions (Block/Parry/Dodge/etc..) if I have 20% crit chance, 20% miss chance, and 60% hit chance and I equip an item that gives me +5% toHit and +5% crit, my stats become 25% crit, 15% miss chance, 60% hit chance.
New hit chance = (Original hit%) + (toHit modifiers) - (crit modifiers)
60% + 5% - 5% = 60%
New crit chance = (Original crit%) + (crit modifiers)
20% + 5% = 25%
New miss chance - (Original miss%) - (toHit modifiers)
20% - 5% = 15%
What this means is exactly like I posted above.
Your 'hit' rate is dependent on Hit gear and crit gear, pushing your 'misses' off the 'hit table'.
::EDIT::
In addition: You have a 100% total amount for your hit table. Say you have a 25% miss rate (natural d/w unmodified), and 0% crit. Ignoring dodge, parry, etc... you will have a 75% chance to normal white hit and 25% miss chance.
So if you increase your to hit chance by 5% your actually lowering your miss chance by 5%. Example; 20% miss rate, 80% hit rate.
Edited, Oct 11th 2007 7:58pm by devioususer