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The Juche ideology is in fact different from Marxism-Leninism in theory, because it is a nationalist ideology. How did I come to this conclusion? It is because Juche is about self-reliance, and independence from other nations. Maxism-Leninism does not call for nationalism. It calls for cooperation between people and nations. In fact, one of the end goals of communism in theory is the withering away of the state, all states, so that there will be no nationalism. Nationalism is a right-wing ideology.  

The Juche ideology is in fact different from Marxism-Leninism in theory, because it is a nationalist ideology. How did I come to this conclusion? It is because Juche is about self-reliance, and independence from other nations. Maxism-Leninism does not call for nationalism. It calls for cooperation between people and nations. In fact, one of the end goals of communism in theory is the withering away of the state, all states, so that there will be no nationalism. Nationalism is a right-wing ideology.  

As far as Marxism-Leninism vs. Juche in practice, on the surface they may look identical, but under the surface there are in fact differences. One of the core tenets of Juche is the supremacy of the leaders of the state, to the point where they are infallible, and cannot be criticized, even after their death.  However, this was / is not true for other communist countries. Krushchev criticized Stalin after his death, and Deng Xiaoping criticized Mao Zedong after he died as well. The main similarities between Juche and Marxism-Leninism are economic, but that does not mean that Juche cannot be a right-wing ideology. Take, for example [[Similarities between Communism, Nazism and liberalism]], in which similarities between the National Socialist ideology and Communism, right and left wing ideologies respectively.

As far as Marxism-Leninism vs. Juche in practice, on the surface they may look identical, but under the surface there are in fact differences. One of the core tenets of Juche is the supremacy of the leaders of the state, to the point where they are infallible, and cannot be criticized, even after their death.  However, this was / is not true for other communist countries. Krushchev criticized Stalin after his death, and Deng Xiaoping criticized Mao Zedong after he died as well. The main similarities between Juche and Marxism-Leninism are economic, but that does not mean that Juche cannot be a right-wing ideology. Take, for example [[Similarities between Communism, Nazism and liberalism]], in which similarities in economic ideology between the National Socialist ideology and Communism, right and left wing ideologies respectively, are presented.

As far as your point about Mao, you are correct about them being both Maoists and Communists (although Mao's influence in current politics is rather weak), however, unlike the North Koreans, they have not disavowed communism in their constitution. In fact, it contains many references to socialism and communism (you can read it in English [http://english.people.com.cn/constitution/constitution.html here]. Maoism is essentially a one word change from Communism: proletariat to peasant, to suit the economic conditions there during the revolution. You could also count in Mao's ideology of constant revolution and upheaval, but this was not practiced after Mao's death.

As far as your point about Mao, you are correct about them being both Maoists and Communists (although Mao's influence in current politics is rather weak), however, unlike the North Koreans, they have not disavowed communism in their constitution. In fact, it contains many references to socialism and communism (you can read it in English [http://english.people.com.cn/constitution/constitution.html here]. Maoism is essentially a one word change from Communism: proletariat to peasant, to suit the economic conditions there during the revolution. You could also count in Mao's ideology of constant revolution and upheaval, but this was not practiced after Mao's death.