"Lust for sacrafice" node on witch minion build

Hi, i try "Lust for sacrafice" on my minion build to get more DPS but its seams be broken?
It should give 40% more dmg for minions when i use two different offerings, now when i use "Pain offering" i get ~3500DPS for minion and when i add "Bone offering" i get ~3700DPS, much much less then 40%. Some one use this note and its work? or maybe its just show wrong numbers in minion status?

Unlike the Pain Offering aura which gives u flat 50% dmg buff, i think Lust for Sacrifice acts as the rest of damage nodes in the passive. Imagine taking 4x 10% minion damage nodes. It only buffs the base damage of minions before all other buffs.