Dead
The death of a family member is hard and you know they are now at peace. You can visit them, talk to them, remember them fondly.
The death of a relationship with a family member is harder because you know they are out there, but they don’t care to have anything to do with you. They are angry and bitter and their life will be tumultuous. All they can remember is are the bad times.
The are the same because you can’t fix it. All you can do is mourn.