Both shows about the upper class people.
Both shows have a female lead that has been cheated on.
Both female leads have “normal” occupation.
Both shows have the ex husband deceased.
Both shows the female lead has to go up against the mistress.
Both shows have kids involved.
Both are entertaining and extra.

Both chaebol dramas about rich people and their lives.
Both female leads lose somebody close to them.
Both female lead plan out revenge or getting back at the person/people who wronged them.
Both dramas have a second female lead that is obsessed with her greed and desires.
There are rich male leads that help the female leads in both dramas.
Both give out the same vibe, about rich people who would do anything for themselves and their greed.