Twilight Devastation - For healer is it possible to simulate it?

Seems to be working with what i’ve done, but not using the good “tier” of this specific corruption.
https://www.askmrrobot.com/wow/theory/mechanic/spell/twilightdevastation?spec=PriestDiscipline&version=41a412f471234905a432cce4bf650e30

Or the dmg value isn’t in good correlation with the dmg in live version.

Doesn’t seems to be my 5% poly that increase it.

Here some MM+ logs ?
https://www.warcraftlogs.com/reports/dDrZG9Pxmthz6Vwa

Tonight is Raiding and i will be using this staff i will share logs if needed