Stengel

06-24-2009, 12:50 PM

Introduction

This is an attempt to gain some insight into how good block value as an itemstat is really going to be for warriors.

In patch 3.2, given 100 item budget points, one the following stats could be gained from two different hypothetical items:

a) 100 dodge rating, which, applied to a warrior with already has 400 dodge rating, is +1.96% dodge (1).

b) 307 shield block value (2)

Calculations

Given a 20% block chance, 55% total avoidance on a hypothetical tank, and a boss which hits for 20k attacking 100 times, with an attack frequency of 2 seconds:

a) Adding 1.96% dodge

An additional 1.96% boss attacks were avoided, totaling 39200 damage.

b) Adding the block value item and using Shield Block whenever possible (ie. 5 times), gives us:

- 50 seconds of Shield Block with 100% block chance where block value is 706 (calculated as 307 * 2.3, where 2.3 is the combined effect of the talent shield mastery, and shield block).

- 150 seconds with 20% block chance where block value is 400 (calculated as 307 * 1.3, where 1.3 is the talent shield mastery).

Under the 50 seconds of Shield Block, 11.25 attacks are blocked. Total damage mitigated is 12619 (calculated as follows: 706 *1.3 *11.25, where 1.3 stands for the effect of critical block).

During the remaining 150 seconds, 15 attacks are blocked, resulting in 7800 damage mitigated (calculated as follows: 15 * 1.3 * 400, where 1.3 stands for the effect of critical block).

Summary

In this example, dodge rating is nearly twice as good when it comes to reducing incoming damage, compared to block from items. That is even on a tank which already has a considerable amount of dodge and is thus subject to corresponding diminishing returns.

20% passive block and Shield Block mitigated a total of 20419 damage due to an item with 307 block value.

The same item, but with 100 dodge rating instead, led to avoiding 39200 damage.

References

(1) Satrina's explanation about diminishing returns (http://www.tankspot.com/forums/f63/40003-diminishing-returns-avoidance.html)

(2) using numbers on Wowwiki's explanation on statmods (http://www.wowwiki.com/Item_level) and doubling them to account for the 3.2 patch changes

Comments

While this must be considered a poor comparison for several reasons, one being that real tank stats were not used (which means that a warrior with 500 dodge rating like in this example, probably has more avoidance than the 55% I was using), dodge would presumably turn out to be even better.

Furthermore, it has to be considered that shield block value also serves the purpose of increase damage and threat, while dodge does not.

Regardless, I hope that this post was informative to the interested reader.

This is an attempt to gain some insight into how good block value as an itemstat is really going to be for warriors.

In patch 3.2, given 100 item budget points, one the following stats could be gained from two different hypothetical items:

a) 100 dodge rating, which, applied to a warrior with already has 400 dodge rating, is +1.96% dodge (1).

b) 307 shield block value (2)

Calculations

Given a 20% block chance, 55% total avoidance on a hypothetical tank, and a boss which hits for 20k attacking 100 times, with an attack frequency of 2 seconds:

a) Adding 1.96% dodge

An additional 1.96% boss attacks were avoided, totaling 39200 damage.

b) Adding the block value item and using Shield Block whenever possible (ie. 5 times), gives us:

- 50 seconds of Shield Block with 100% block chance where block value is 706 (calculated as 307 * 2.3, where 2.3 is the combined effect of the talent shield mastery, and shield block).

- 150 seconds with 20% block chance where block value is 400 (calculated as 307 * 1.3, where 1.3 is the talent shield mastery).

Under the 50 seconds of Shield Block, 11.25 attacks are blocked. Total damage mitigated is 12619 (calculated as follows: 706 *1.3 *11.25, where 1.3 stands for the effect of critical block).

During the remaining 150 seconds, 15 attacks are blocked, resulting in 7800 damage mitigated (calculated as follows: 15 * 1.3 * 400, where 1.3 stands for the effect of critical block).

Summary

In this example, dodge rating is nearly twice as good when it comes to reducing incoming damage, compared to block from items. That is even on a tank which already has a considerable amount of dodge and is thus subject to corresponding diminishing returns.

20% passive block and Shield Block mitigated a total of 20419 damage due to an item with 307 block value.

The same item, but with 100 dodge rating instead, led to avoiding 39200 damage.

References

(1) Satrina's explanation about diminishing returns (http://www.tankspot.com/forums/f63/40003-diminishing-returns-avoidance.html)

(2) using numbers on Wowwiki's explanation on statmods (http://www.wowwiki.com/Item_level) and doubling them to account for the 3.2 patch changes

Comments

While this must be considered a poor comparison for several reasons, one being that real tank stats were not used (which means that a warrior with 500 dodge rating like in this example, probably has more avoidance than the 55% I was using), dodge would presumably turn out to be even better.

Furthermore, it has to be considered that shield block value also serves the purpose of increase damage and threat, while dodge does not.

Regardless, I hope that this post was informative to the interested reader.