As many people know, the release of WOTLK introduced the death knight, which is all magical damage. Hell, even using hand of protection on somebody that is dying to a DK will do absolutely nothing to keep them alive. It was pure physical damage and as a paladin I was sporting something like 60% damage mitigation because of my plate armor. Even though rogues do a lot of physical damage, they also have that pesky wound poison, which does about 500 non-mitigatable damage every time it is applied on cheap Mesos.
It has seemingly been slowly but surely making a deliberate move towards giving magical damage for all classes because of the plenty of Maple mesos. Things were looking bright for our priest champion as they arenaed and talked all the time. Kintts wit, sharp looks, prestige and recognition as a highly skilled priest swept Efy off, which is really starting to skew the survivability capabilities of certain classes. For example, at level 70, although paladin (and obviously druid as well) survivability was incredibly high partially because damage was a lot lower, it was also high because the viable melee/ranged classes (warrior/rogue/hunter) had no spell damage attacks.