The big difference was National Socialism under Hitler had a Crony Capitalist system as far as the means of production was concerned.
The Soviet Union had no such system, the State controlled all means of production with no risk reward system at all, which is why they could not make enough munitions for war and were totally dependent on Lend-Lease to survive.
Soviet Union also relied on Slave Labor for their big projects.
That was actually the main reason for The Night of the Long Knives. Rohm and the SA advocated the complete government takeover of the means of production. Hitler knew this would scare off the industrialists that he needed to build his war machine, and so to get their support, he killed off the SA and ended the threat.
But it should be known, that once Germany won the war, and they were no longer needed, the industrialists would have faced the same fate as the Jews.