Quote Originally Posted by Talep94 View Post
Is the advantage of aggro we have 300%, or +300%, going from *3 to *4 ?
It's a *3 multiplier.

Does this advantage is applied on ours heals ?
No, it doesn't seem to affect healing, just damage.

I would be very pleased if you had the source of the info too, i wish i could find it myself...
It was all in the beta forums, which means it can't be posted here. Most of the objective testing that was conducted during beta happened before the NDA drop, and the terms of the NDA drop also explicitly disallowed copy-pasting any info from the forums. So, beta testers can tell you the conclusions and even the methods, but we can't present the actual data. (bohbashum re-created one of his tests after launch, though, and posted the result here.)