How do you figure that vitality gives more of an improvement than any other stat for all classes? I think the only one that it clearly gives the most to is paladin. For dps vit is one of the worst same for healers (mnd = more healing = more HP long term). Warriors are the only class that stat allocation in multiple stats (in this case vit vs str) can mathematically be comparable in end results (due to the fact that str = damage and damage = more self healing and more self healing = more mitigation, where vit gives more max HP slightly higher passive hp regen and helps with stoneskin/%hp based sch heal). I still say its a toss up between the two stats and you can't go wrong by going with all of one or the other or any combination of the two.
