비슷한 사건, 엇갈린 판결...불륜 저지른 목사의 최후는?

Here are two incidents for today.

① Murder of Pastor Husband
March 9, 2020.

A wife murdered her pastor husband in a house in Anyang-si, Gyeonggi-do.

The reason for the murder was her husband's infidelity.

The wife used violence against her husband, including verbally abusing, assaulting, and confining him,
and even filmed her husband naked...

The wife was sentenced to 7 years in prison.

② Pastor who murdered his wife
August 25, 2022.
A pastor who was doing missionary work in the Philippines
committed an affair and fought with his wife,
and in a fit of rage, he killed his wife with a blunt weapon.
The husband buried his wife's body in the front yard...

The husband who turned himself in was sentenced to 18 years in prison.

These two seemingly similar but different cases,
Why are the sentences different?