What are the main differences between Maoism and Soviet Marxism? I suppose Soviet Marxism needs to be divided into two phases Stalinian and Revisionist. I've read textbooks from Maoist China, Stalinian Russia, and Revisionist USSR, and haven't found vast differences.
Maoist dialectics is basically the same as Soviet dialectics between 1931-1937, before the publishing of Stalin's DiaMat and HistoMat, which downplayed the unity of opposites. The revisionists restored the First Law, but never gave it the same emphasis as the New Philosophy or the Chinese did.
While Mao did break with the Soviet emphasis on heavy industry, the Soviets did not really downplay the importance of light industry and agriculture in the developing people's democracies.
I would say the main difference comes down to the nature of peaceful coexistence and peaceful transition to power.