I think you are dreaming. The US crushed Japan, using only about 30% of it war production to do it. Suppose, somehow, a miracle occurred and Germany won in Europe. The US could have screened the East Coast. Germany didn't really have a way to strike at us across the Atlantic. Now put all that massive war production into the Pacific. And you still have one big headache for the Germans...supplying any troops in the Pacific. Japanese industry couldn't have done it. They could not really keep up with their own needs, let alone supply Germans. And the only available German supply line would have been through Siberia...a single railroad line, highly susceptible to partisans. And another smaller, but still substantial headache for the Germans. Garrisoning all that territory in Europe. That would have taken a huge chunk of the Wermacht.
the major problem, well two actually, was first she was an island nation second she was small i think hapsburg has a point it's been estimated if japan could have kept up her kamikaze attacks on the battle of okinawa for another month the outcome would be a lot different you stated 30% went to the japanese effort look at the size of japan and ask yourself why it took 30% the answer is simple the japanese did not surrender think about it if japan was 3 times bigger we would have had a serious problem on our hands the japanese fighting mentality was one of the reasons america used the bomb, because we knew an invasion would have been a bloodbath
True about the bomb. Truman decided to use it when he was given extimates of 100,000 American dead to invade Japan. However, consider some statistics from the war, just in naval production... Heavy carriers...The Japanese only commissioned 1 CV after the war started. 4 others were destroyed or damaged and were never completed. American built 26. Battleships...The Japanese commissioned 2 BB's, which had most of their work finished before the war started. We built 10. Heavy cruisers...The Japanese built 1 CA. We built 14. This is just the three largest classes. Lesser classes and aircraft were also heavily in our favor. And the Japanese were way behind us in building support ships. And this was just with the fraction of our production allocated to the Pacific. By the end of '43, the Japanese had exhausted themselves. After that, it wasn't even close to a fair fight. And recall that with the 70% going to Europe, we overwelmed the Luftwaffe.
The Battle of Britain was over before the US joined the war. The US had nothing to do with helping to save Britain. It was the British that saved the British along with the Commonwealth.
Admiral William Leahy estimated that there would be more than 250,000 Americans killed or wounded on Kyushu alone. General Charles Willoughby, chief of intelligence for General Douglas MacArthur, the Supreme Commander of the Southwest Pacific, estimated American casualties would be one million men by the fall of 1946. Willoughby's own intelligence staff considered this to be a conservative estimate. Had Olympic come about, the Japanese civilian population, inflamed by a national slogan - "One Hundred Million Will Die for the Emperor and Nation" - were prepared to fight to the death. Twenty Eight Million Japanese had become a part of the National Volunteer Combat Force. They were armed with ancient rifles, lunge mines, satchel charges, Molotov cocktails and one-shot black powder mortars. Others were armed with swords, long bows, axes and bamboo spears. The civilian units were to be used in nighttime attacks, hit and run maneuvers, delaying actions and massive suicide charges at the weaker American positions. At the early stage of the invasion, 1,000 Japanese and American soldiers would be dying every hour. The invasion of Japan never became a reality because on August 6, 1945, an atomic bomb was exploded over Hiroshima. Three days later, a second bomb was dropped on Nagasaki. Within days the war with Japan was at a close. Had these bombs not been dropped and had the invasion been launched as scheduled, combat casualties in Japan would have been at a minimum of the tens of thousands. http://www.waszak.com/japanww2.htm