Wrong scaling of engraving, bug?

heyho guys, i just got my engravings from lvl 3 precise dagger/adrenaline/reflux to lvl3 adrenaline/blunt weapon/reflux and lvl 2 grudge so I should actually have 60% more dmg + no disadvantage of precise dagger from 12% less crit dmg so 72% more dmg but the dmg just stayed the same for me where I tested it in the training room.

stats: 1.2k crit 500 agility (85% crit chance with full stacks).

I tested it with punishing blow(got the game in another language don’t know the skill name in english translation) with the old build I did with the skill 1.85mil± dmg and with the new build 1.9mil± maybe. but with 72% more dmg such a small difference? <_<