Tanks, please use strength gear.. :(

[Zaresin]

End game raids have dps checks and enrage timers, tanks with better dps help a lot there, especially during progression when dps are still undergeared.
But DPS is only one of the reasons, majority of tank skills scales off STR (which includes all of the self-heals), Wheres other than Divine Veil and Thrill of Battle, I cant think of any other tank skill scales of VIT. Living Death is actually worse with more VIT since the healers have to heal the DRK more to get rid of the debuff.
More VIT in the end is just more buffer, good CD usage is what makes a tank less squishy.
Lastly, WAR is squishy during mannor since they lack any good mitigation skill at that level.

Benediction says hello. IF you are using Living Dead in dungeons then you have a problem. That means someone messed up (either you overestimated a healers ability or they popped into CS and you just took way too much damage before the CD came off and they could get out of it). I have all three healers at 60 and have never had an issue healing a tank to max when they are getting their faces smashed in except on AST as they have less emergency OGC heals compared to the other two healers. I haven't played it much since their buff so that may have changed for them quite a bit.