Originally Posted by
Mowg
This is purely an assumption on my part, but when the Hatchling is targeted, you don't get the imprinted buff straight off the bat, which is why most tanks don't start their proper rotations (and just auto-attack) until the imprinted buff is applied. The difference between a Blood DK's 2PC and the rest of the tanks is the fact that the DK's 2PC is activated solely from melee attacks (whereas the rest of the tanks apply it through abilities).
This means as soon as you start auto-attacking the Hatchling, you're activating the 2PC before you get the imprint buff. Because every melee attack refreshes the 2PC, it seems like it's not scaling from the imprint buff (since the modifiers don't get included with refreshes). The other tanks cannot refresh their 2PC infinitely like a DK can, so when it does fall off for them, they reapply it and it becomes modified from the imprint. That is why I think you're seeing no modifications with your 2PC as a DK - again this is pure speculation on my part and won't be able to test it til later tonight.