puts on boomer WWII Enthusiast hat

Realistically Western air power would have been an extreme pain in the Red Army's ass, yes, and the extremely small number of heavy bombers and underdeveloped navy would have made it extremely difficult if not impossible for them to attempt to take Britain. The USSR made particularly extensive use of Lend-Lease trucks, yes (trains though? Where the hell is he getting this from...?) On the other hand it's not like the USSR couldn't make plenty of trucks, they were just prioritizing other manufacturing because, you know, the US was shipping them all they needed...

The "no friendly civilians or partisans" bit is also pretty hilarious. Obviously not a perfect proxy, but the French Communist Party received roughly a quarter of votes in the 1946 elections, the Italian Communist Party a bit more than 30 percent in 1948, the Belgian Communist Party about 13% in 1946, the Dutch Communist Party about 10% in 1946... hell, the German Communist Party managed about 6% in the 1949 West German elections despite Germany's 12 years of Nazism followed by four years as an American vassal state and the beginning of the Cold War. There wasn't majority support for communism in post-war Western Europe but I don't think it's too hard to imagine about 10-20% of the population would have been willing to fight for it.

I'm glad calmer heads prevailed over Churchill and Patton because WW2.5 would have been horrific and killed tens of millions but my bet's on the USSR taking most of continental Europe, the US and UK attempting a few offensives that go nowhere and eventually a settled peace that sees most of Europe under something like the Warsaw Pact, maybe with France as a neutral buffer between the UK / demi-fascist Iberia and the USSR.

Looks to me kinda like (blond?) Stalin as portrayed by Fred Armisen.

...I fear the negative energies I have put out into the universe by writing this will eventually result in SNL doing this bit, for which I am preemptively sorry.