I found this thread on the WOW forums. There are a lot of interesting things in it. I'm not going to go into how they came up with these statements, you can read the thread if you want to see. I'm just going to talk about their implications. There are two statements, that if true, are revelations in how warriors tank, and how aggro works on raids in general.
1) You must have 110% of the aggro of the current target to pull aggro. I find this very believable from my experience. If you only needed >100% aggro could bounce around people a lot. But on raid mobs, if someone pulls aggro it's not just a single sunder that will get them back. It takes some whacking on in do it.
Take Onyxia for example. If someone pulls aggro off the MT on stage one (and can't dump aggro like a rogue or hunter) that means they have 110% the aggro the MT had. Now the MT must get to 121% of the aggro they just had to get it back... not easy to do.
This alone isn't that huge, but the next statement with it is game changing.
2) Taunt will give you exactly the threat of the player on top of the threat list - but not the 10% needed for the mob to change aggro, only a temporary aggro from the debuff! If you do nothing, you will stay at 100% of the mob's old target's threat, and will lose aggro with the taunt debuff. With a relatively small effort, you can gain aggro! Now this is harder to test. It also goes against our old belief that taunt doesn't create any permeate threat. Against none raid mobs they often die so fast that you can't test this theory. But I have one example that makes me believe this to be 100% correct.
A month or two ago I was tanking Golemagg. At around 70% I died. I got combat ressed and Shal (the ST) had aggro. I taunted Golemagg and got a few sunders on him. But he went back to Shal, and Shal died. Now if taunt didn't generate any aggro there is no way in hell I'd have aggro, but I did! That means that taunt had to generate aggro! A few sunders is not going to creat more threat that the healers or DPS classes for 30% of Golemagg's life.
Another example I have is tanking Giants in MC. They knock back their target a lot, and attack the backup tank. If I just try to sunder etc. to get back aggro it doesn't work very well if at all. But if I immediately taunt him, then lay into him, once taunt wears off I still have aggro. So taunt is making up that aggro I lost, and I only have to make up that 10% difference to keep aggro.
This has a lot of implication for raids:
1) If the mob is not tauntable, and you get aggro after +10-15 seconds, it's unlikely the tank will be able to aggro off you very quickly (like Onyxia).
2) If the mob is tauntable the ST can stay within 10% of the MT's aggro by just taunting, nothing else. This can be good if the ST wants to stay right up with the MT, but bad if the ST is doing a ton of aggro moves and could steal aggro easier than they thought possible.
I'm sure there are other implications from this information that other people could think of.
Edit: Changed the link to the actually original post. There is also a lot more explanations done in page 5-6 to clear some things up.
1) You must have 110% of the aggro of the current target to pull aggro. I find this very believable from my experience. If you only needed >100% aggro could bounce around people a lot. But on raid mobs, if someone pulls aggro it's not just a single sunder that will get them back. It takes some whacking on in do it.
Take Onyxia for example. If someone pulls aggro off the MT on stage one (and can't dump aggro like a rogue or hunter) that means they have 110% the aggro the MT had. Now the MT must get to 121% of the aggro they just had to get it back... not easy to do.
This alone isn't that huge, but the next statement with it is game changing.
2) Taunt will give you exactly the threat of the player on top of the threat list - but not the 10% needed for the mob to change aggro, only a temporary aggro from the debuff! If you do nothing, you will stay at 100% of the mob's old target's threat, and will lose aggro with the taunt debuff. With a relatively small effort, you can gain aggro! Now this is harder to test. It also goes against our old belief that taunt doesn't create any permeate threat. Against none raid mobs they often die so fast that you can't test this theory. But I have one example that makes me believe this to be 100% correct.
A month or two ago I was tanking Golemagg. At around 70% I died. I got combat ressed and Shal (the ST) had aggro. I taunted Golemagg and got a few sunders on him. But he went back to Shal, and Shal died. Now if taunt didn't generate any aggro there is no way in hell I'd have aggro, but I did! That means that taunt had to generate aggro! A few sunders is not going to creat more threat that the healers or DPS classes for 30% of Golemagg's life.
Another example I have is tanking Giants in MC. They knock back their target a lot, and attack the backup tank. If I just try to sunder etc. to get back aggro it doesn't work very well if at all. But if I immediately taunt him, then lay into him, once taunt wears off I still have aggro. So taunt is making up that aggro I lost, and I only have to make up that 10% difference to keep aggro.
This has a lot of implication for raids:
1) If the mob is not tauntable, and you get aggro after +10-15 seconds, it's unlikely the tank will be able to aggro off you very quickly (like Onyxia).
2) If the mob is tauntable the ST can stay within 10% of the MT's aggro by just taunting, nothing else. This can be good if the ST wants to stay right up with the MT, but bad if the ST is doing a ton of aggro moves and could steal aggro easier than they thought possible.
I'm sure there are other implications from this information that other people could think of.
Edit: Changed the link to the actually original post. There is also a lot more explanations done in page 5-6 to clear some things up.
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