Answer:
No, Stalin's form of communism is called Stalinism, and so it is different in many ways, Marxism has complete control of politics, the economy and foreign affairs in the peoples hands, this includes law making and voting. So it is true direct democracy, but with equality as the underlying principle, meaning, no more rich controlling peoples ideas and emotions through authoritarianism. Stalin's was a form of totalitarianism, with fear police and a completely centralized government, in a nutshell, these are some major differences.