Stoneskin not useful?

[Jonnycbad]

Can someone explain why they nerfed stoneskin? Everyone I ask, says that 18% of Max HP of 12-15k+ is extremely over powered...but I don't buy it. If our HP has scaled up from 50-60, then shouldn't mob damage have scaled up proportionately? So 18% of 15k HP at level 60, vs 18% of 7k HP at level 50, should be comparable, as we are taking proportionately the same (or lower) damage as we did at 50. So what gives?

As it stands, Stoneskin is decent for a precast on tank before bosses, but that's really about it (or maybe to cast on self as a HP buffer since it lasts 30min). The cast time is way too long to be useful on SCH or AST during a fight, at least WHM have SS2.

I think SS1 should be AoE, and SS2 would be the same but also reduce incoming damage by 10%(until the stoneskin HP is consumed), making it like an expensive Succor without the heal, for WHM