User blog comment:TheDoctor230/Oliver's Main Bad Guys/@comment-24152851-20170921061628/@comment-27673963-20170921130906

Ra's still managed to keep Darhk in line for a long time and Damein only managed that deal with the Nazis because he was aided by Eobard Thawne.

I do believe that the League would have defeated Damien if he tried to activate Genesis. Darhk had been planning Genesis for hundreds of years and I think Ra's is why that never came to be before he died.