The same phenomenon exists in murder and accidents.
I didn't deny that the phenomenon exists regarding murders. I said it was considered rude to direct such comments to the people affected by the tragedy in murders, but not with rape. Almost no one goes up to the grieving spouse and says "he should have worn a helmet". Rape victims and their supporters constantly tell of stories about people saying they should not have been drinking, etc.
Are you saying you think the frequency is equal, or that frequency doesn't indicate cutural attitudes? Are you asking if there are studies on the frequenciy of victim-blaming? Should I do antoher search, and find such studies, does that prove the point, or are there more loaded examples waiting in the wings?