Originally Posted by
Mikey_R
Yes and no. Just reducing them both down to effective HP does not tell the full story. TBN directly reduces the incoming damage whereas ToB does not. This difference is going to matter in some cases so it is important to not conflate the two.
Due to the nature of the two actions, one will be better than the other based on the incoming damage proportional to the tanks HP and how that damage is done. If it is damage done in the first 4 seconds, they are about even in terms of mitigating damage (not counting the BW healing), however, if some of the damage is done outside of that first 4 seconds, or if the shield is broken early, TBN is likely to mitigate more, again, not counting the healing. If you want to do some calcs yourself, I worked out that 400 potency heal on Warrior is about 7% of their max HP in healing (I checked with all my gear on and with no gear on except weapon, both came out to the same).