As a hate tank, you want to be a WF. The immunities helps, the DoD helps more. Also, since you're a WF, you can be healed by arcanes too, and all this while cursed. In the same time, you get more hp from racial toughness.
As a intimi tank... i don't really know. Someone is still using itimi tanks? I *think* WF should come on top anyway, high dr from shield + high dr from DoD makes them nigh-vulnerable. But it's not like i've seen someone use a intimitak in ages.
At least, this is my opinion. Half orcs get +2/4 to hit/damage, which makes them great dps, but they still have lower DR and can be cursed, and have lower HP too.