The only problem here is that those calculations assume that the dot component does 1:1 threat (1 damage = 1 threat), which is never confirmed, ether way, it's fairly obvious that lacerate shouldn't be your main move while tanking.
I hope it still has it's uses in high mobile fights (knockbacks, aggro wipes etc). I don't care much for the threat generation in low mobile fights; Mangle, Maul and Swipe do that job fine. (On that note, I sometimes get the impression that Growl has a slightly lower range than my other Bear skills which often leaves me frustrated when I though I taunted a mob but the game didn't process it. Anyone else noticed that?)
But with the advent of Intervene and Paladin's Righteous Defense and BoP, the other two tanking classes gained a total of 2 skills to deal with aggro wipes/knockbacks whereas Druids would be still at one (though FC is great). Let's just hope that the Devs wanted Lacerate to be the Druid's second option to help deal with that.
(On that note, I sometimes get the impression that Growl has a slightly lower range than my other Bear skills which often leaves me frustrated when I though I taunted a mob but the game didn't process it. Anyone else noticed that?)
If you mean feral charging a mob from behind and being out of range to taunt it, then yes, I do have that problem all the time.
I've found I'm blowing a growl to no effect (either a resist, oor, or something) about 1/3 of the time. Pretty frustrating even though *so far* it has never happened on a boss or in a situation where it has caused the group to wipe. It has almost the same feel as the cat form range bug.
Any suggestions on how to avoid it? I feel like I'm a very competent bear tank and having that rather critical aspect of a tanking class fail so often for me is quite frustrating.