No. That might be true if you killed adult Hitler and removed him from the picture. But if there was no adult Hitler there would almost certainly have been a nationalist or right-totalitarian alternative to Thaelmann and the Communists.
It might have been Hugenberg or Roehm or somebody we've never heard of. What you say implies that only Hitler could save Germany from Communism, and that's giving him far too much credit. The forces and appeals that brought Hitler to power would most likely have worked for somebody else if he hadn't existed.
He makes a pact with Stalin which sticks, because they're both commies, and they split central and eastern Europe between them.
Like Stalin and Tito or Khruschev and Mao or Mao and Ho? Your scenario is possible, I guess, but it's not the only one.
WWII is Stalin, Mao, and Thalmann against Churchill, FDR, and Hirohito, with the Anglo-American alliance with Hirohito as tenuous as the actual alliance with Stalin ...
Or maybe there wouldn't be a war. A German-Soviet bloc controlling everything from the Rhein to the Pacific might be able to pressure the French into concessions without war. It's unlikely that it would be as bent on repeating the First World War as Hitler was.
we're then stuck with a Cold War between Europe/America and the Japanese Empire, and the "Japs" are just as murderously destructive as the Nazis would have been if we hadn't killed baby Hitler, and as the European empires collapse, the Japanese constantly try to infiltrate Latin America, Africa, and Asia—forcing us to make alliances with the Muslims against them...
But China's in the picture as well. Maybe, as happened in our history, Japan would be more interested in conquering China and the European colonies of the Far East than in fighting the Germano-Russian colossus. If Japan did fight Russia, maybe China might get its act together eventually and exert itself on the world stage. Would the Japanese really have the strength to play as powerful a role as Germany or the USSR did? Would anything they did really arouse the kind of horror as what the Nazis managed to do?
Anyway, congratulations for having such a potent imagination.
Would the Japanese really have the strength to play as powerful a role as Germany or the USSR did? Would anything they did really arouse the kind of horror as what the Nazis managed to do?
Yes, and yes, as long as they had access to natural resources; the Japanese treated their conquered subjects much worse than the Nazis did, and killed as many people as the Nazis did, and probably would have kept killing. And I say that as someone who has spent his life involved in Japanese culture, as my "nickname" indicates.