User blog comment:TheDoctor230/The FBI Investigation of Oliver/@comment-27700324-20180312023828

Damien Darhk was nuking Star City. However yes, he did save the world with the help of the Flash and Supergirl twice now in the Invasion and Crisis on Earth-X arc.

Except despite the murder ratio being lower than the saving count. That isn't how crimes are measured. Barry Allen's CSI work has led to tons of criminals getting their just desserts and when "DeVoe" died all that changed. So basically in the justice system, you do the crime you do the time. No matter how many people you save afterwards.