Last time I ever heard of gearing tanks for survival was Everquest. You may have seen some outdated thinking in early WoW due to EQ's raiding mindset transfering to early WoW, but that was long discarded in favor of increasing damage.

Also check your class abilities. I believe its Warriors (couldn't say for sure, I haven't leveled one) that has an ability or two that auto crits or auto direct hits. Which will help you determine which stat you want to go with.