I think it is safe to say that if Hitler had the atomic bomb the human race wouldn't exist today. So yeah, I'd say Mr. Oppenheimer was perhaps the most important human being to ever live.
looking forward to seeing it . At the FDR Museum in Hyde Park NY there is a letter from Enrico Fermi that is telling FDR they are working something scientific that might be able to end the war. Later FDR looked into the project and realized he knew some of that already ..