umm, no im not sure about that, it says Lvl Over Cap. Key word Over, So i think when you lvl up to 76 you will lose 5% Like it says, 10% at 76, 15% at 77, 20% at 78, 25% at 29 and 30% at lvl 80 ((New exspansion)). So at lvl 80 if you still have this wep, and God willing there will be an Epic 3.0 You will only be doing 15%more damage as opposed to the full 40%.
I wont cry to much cause being able to get lvl 80 there should be alot better spells and also your stat caps and what not increase, get new AAs so should be ok ;). Game might be getting outta hand but at the same time i like being stronger then i was befor.