Due to itemization and abilities, Warrior and Paladin tanks currently have a greater ability to avoid Crushing Blows than Druid tanks. In the near future, this may become a moot point. Khurg of Spirestone, a Tauren Warrior, worries that Warrior tanks may become somewhat obsolete with the removal of Crushing Blows from boss mobs and a potential thirty second cool down on Shield Block. He asked "What will be the purpose of defense in WotLK ?" The following response from Rawglrlrgll of Lothar was that the defense statistic prevents critical strikes and still buffs the chance for avoidance.