Vermin Gorger 

Creature — Vampire
{T}, Sacrifice another creature: Each opponent loses 2 life and you gain 2 life.
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Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Acolyte of Aclazotz 83%
$0.21#10833
"{T}, Sacrifice another creature or artifact: Each opponent loses 1 life and you gain 1 life."
Denethor, Ruling Steward 83%
$0.22#6900
"{2}, Sacrifice another creature: Each opponent loses 1 life and you gain 1 life."