What makes us tank magic dmg, in the most part, is not the "innate" extra DR we have (according to only solid info we had from leak is 50 DR, where for other classes is ~25-37) + mountain aura passive (+8 all DP). As DR is a flat scaling and not % based, (save for DP bracket boost) that is not the really significant part. Most of our additional defense comes from selfbuffs and skill addons, which when used right can add a 40-45 magic DP (less for other type of dmg) on top. And that is what really makes the difference. When buffs aren't stacked we would get on average 10% less dmg from magic due to passives. Popping and keeping the DP buffs up supplements this by quite a bit, even more noticeable on Hybrids.