Overall when you look at the difference DH will account for the equivalent of 1 more GCD on the tank. Ten will account for about 1 more gcd on the healer. All that when you're in BIS with the content on total farm status. In a lot of cases is actually probably a wash overall. I feel like priorities are a bit out of whack when we're talking about sacrificing mitigation for possibly no gain, and only when it's on farm status for everyone.