I've found it interesting, it's one of the things you get rather fragmented information on while learning to tank.

Does DRK's lack of self-heal factor into anything? For example, you're 61-69, you don't have TBN and Souleater doesn't heal anything outside of Grit, ...I'd have imagined this puts more on the healer than a flat 20% loss of tank mitigation. I admit I don't know how other tanks function compared to this, do others lose more than a flat 20% mitigation too?