Okay, I'm going to approach this at another angle.
It shouldn't be healing you to full as a tank effortlessly either. The power between Bloodwhetting and Bloodbath is totally incomparable if you're talking the use in aoe.
To test out how potent it actually is, I went in game and used both Bloodwhetting and Equilibrium multiple times.
At my item level (either 653 or 654), I have, rounded down, 114,000HP, and per weaponskill Bloodwhetting healed me for anywhere from ~8.8k-9.2k HP, and you should be getting 4 GCD's in, so now let's do the math.
Let's use the standard double pull in dungeons. Let's say you have 8 mobs on you. I'll use 9k as a medium then show the lowball 8.8k
- 9000*4=36,000 | 36,000*8 = 288,000 HP healed + 9,000eHP from the shield (totaling 297,000) + 10% flat mit for 8s
- 8.8k*4=35,200 | 35,200*8 = 281,000 HP healed + 8,800eHP from the shield (totaling 289,800) + 10% flat mit for 8s
Equilibrium is a flat 1,200 potency plus the HoT proved to be relative to the cure potency calculations from BW. Like the prior calcs I used rounded values.I could heal myself almost thrice over given that circumstance with Bloodwhetting. Even halving the amount of mobs still nets over your entire HP pool, this with a flat mit on top of everything else. Just the healing alone is almost 6 times higher than Equilibrium (5.818... using the 9,000 HP rounding), and halving the amount of mobs given the same 9k HP calc (144,000) is nearly three times more potent than Equilibrium (2.90...), and Bloodwhetting is on a 25s cooldown, Equilibrium on 60 seconds.
- 27,000 + 22,500(HoT)=49,500 total
That is an absolutely ludicrous amount of healing that NO TANK should have readily available every 25s. The simple calcs I just listed don't include crit heals either. It's not "doing just well" or "doing just fine", you're basically immortal due to how fast it comes off cooldown and the sheer volume of self-healing from it. It ranges from one benediction to nearly four every 25 seconds. That people think this even remotely healthy balance on any tank with how completely mindless it is to perform is mind-boggling.