For there to be an equivalency, the death penalty would have to punish a criminal who had warned his victim of the date on which he would inflict a horrible death on him and who, from that moment onward, had confined him at his mercy for months.
In holding that the death penalty, as it was applied at the time, violated the the Eighth and Fourteenth Amendments, the Furman Court was confronted with evidence that these death sentences were imposed in arbitrary, capricious and discriminatory ways. Who pays those costs? More specifically, the media simplifies complex cases by ensuring news stories adhere to generally taken-for-granted, preexisting cultural understandings of capital crimes.
Furthermore, in order to demonstrate the effectiveness of a deterrent, we would expect to see lower crime rates in states allowing for the death penalty.
According to the Death Penalty Information Center, juries in some states are three times more likely to hand down a death penalty for a black offender than a white offender. Most homicides are spur-of-the-moment, spontaneous, emotionally impulsive acts. Many district attorneys must also consider the financial hardship that seeking death might place on their jurisdictions.