You need to not just convince me, but probably every WW2 historian that Russia could have won war on its own.. That's the BS... Do your homework OG..
https://www.reddit.com/r/AskHistorians/comments/4h4c7w
Read When Titans Clashed by David Glantz.
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And German doubly strong (at least) with no bombing campaign, no French front, no Africa to fight in.. Etc etc
American War production outpaced Russian, even by 1945. Russia had some focused production that managed to just beat US, but you can't suddenly remove all that war production from balance and expect same out come.. Germany was on its knees not because of bombing by Russians but because of US and UK efforts. Again, remove that, and free up all the hardware fighting in France, Africa, Italy and all of a sudden Germany are a different prospect. Yes, we all know sacrifice Russians we're willing to make, but without US, etc etc there would have been millions more.
How about offering a semblence of justification for your silly opinion. Fact, figures, likely outcomes etc without US, UK, France, Etc etc. Just calling my explanation BS is typical OG. No facts to back your opinion up at all, so call names.
It's an opinion I, ve heard before, normally held by those who actually think they know more about WW2 than they actually do. Facts say you argument is utter BS. Not mine.)