Allied casualties were running 7,000 per week.
10 more weeks of fighting would have generated Allied casualties equal to those killed in the Hiroshima bomb. 20 weeks would have equaled the total of both Hiroshima and Nagasaki.
And an invasion of Japan would have been the hardest fighting of the entire war. Casualty estimates were predicted st from 2-4 million Allied troops and 5-10 million Japanese.
Yes and then add all of the POWs and conquered peoples that were dying at the hands of the Japanese.