So USSR was a dictatorship
No, not even the CIA thought the USSR was a dictatorship. You can't just make unsourced blanket claims based on your emotions.
the country was in ruin after WW2
Yes, they did around 4/5ths of the fighting against the Nazis in totality.
The 3 factor i mentioned are there.
If you conjure them into existence from your imagination, sure.
The data shows what everyone knows, capitalism increase inequality. But what it doesn't show is how communism made the country improve, because it didn't.
GDP per capita rose dramatically, wealth inequality dropped massively, life expectancy doubled, literacy rates trippled. The USSR had free healthcare and education, and guaranteed housing and employment. They ended famine, and made it to space from being a semi-feudal semi-industrialized nation 50 years prior. They democratized the government structure. Life absolutely improved not only under Communism, but because of it.
What i'm saying is, it couldn't help because of the war and Stalin. We don't know if it would've otherwise.
What on Earth are you trying to say? Of course the USSR had to focus on its military to survive, which impeded consumer good production, but life absolutely improved.
Cuba again is a dictatorship, and wasn't rich.
Cuba is richer than under Batista despite a cruel embargo, and isn't a dictatorship. You keep throwing out unsourced opinions as though they are facts.
The PRC is a dictatorship, China went on a horrible famine with Mao. Nowadays getting richer only because of how their economy is now fully capitalist.
The PRC practices whole-process people's democracy, the famine under Mao was the last famine in China's history of frequent famines, and China is Socialist, it has a Socialist Market Economy based on Socialism With Chinese Characteristics.
So let's say you had significant data that showed it improved some things socially. And let say you somehow managed to prove its causal and not coincidence.
I have.
I would still rather not say dictatorships like USSR or PRC are good to live under.
You would have sided with the Tsars? The Kuomintang? The Russian Federation? What on Earth are you talking about, here? You'd rather live in societies with less freedom and lower quality of life metrics?
That's my point, even if communism was good, dictatorship is a plague that makes any system a nightmare.
You have no point, only vibes and a firehose of falsehood. Read Blackshirts and Reds.