This comment is unrelated to the discussion you are replying to, but I'll give it a brief response. First, all you need to know about whether the Soviet efforts in WW2 and the American efforts in WW2 were better for Europe is to consider the outcomes of East and West Germany. Second, I have serious doubts whether the USSR alone could have prevailed against Germany and Japan. But as to whether the US and the UK could have, you need only ask Oppenheimer.
This comment is unrelated to the discussion you are replying to, but I'll give it a brief response. First, all you need to know about whether the Soviet efforts in WW2 and the American efforts in WW2 were better for Europe is to consider the outcomes of East and West Germany. Second, I have serious doubts whether the USSR alone could have prevailed against Germany and Japan. But as to whether the US and the UK could have, you need only ask Oppenheimer.