And I've seen other theorycrafters prove the opposite. Theck is not the only palprot theorycrafter and not every one of them aggre with his calculations.
However, it is indeed a very good dps stat for palprot and a correct survival stat. But far from the "the best stat after hit/exp" if you're just looking for survival.
I discussed with a palprot who had to change his reforges/gemming for Sha of Fear 10HM and confirmed that his survival was significantly worse than before.