Usefulness of +defense

[Exedore]

link (http://forums.worldofwarcraft.com/thread.aspx?fn=wow-warrior&t=408118&p=1&tmp=1#post408118)

Basically, after around 415 Defense (100 + 5*63), any more becomes worthless. Also, +Defense is not properly reducing the chance of a recieving a crushing blow as Blizzard claims.

[Galad]

We have determined that the defense statistic was being applied to items too liberally, causing those items to be stronger than they should have been relative to other items of the same level with different effects. As a result, we have reduced the amount of defense points on all items with bonuses to defense by approximately 33% in order to bring those items in line with other similar items.

It will be harder to get into the extreme 500+ defense now with this nerf anyways.