Can anyone confirm:

Based on the physical mitigation of Rune King Molinar, will using a DW para spec (phys dps 38/22/6) be less dps on Molinar than a RB spec (non phys dps: 29/25/12)? Consider gear and specs equal on dummies. The question really is, does Molinar have a higher mitigation vs. physical attacks? This question was posed to me earlier, and I thought I'd ask the community.