Please note that my knowledge about the Cold War is limited and I am still learning about the whole idea of the Cold War as a whole because it is a big subject and it takes a lot of time to digest.
But something that caught my attention - both Che Guevara and Mao Zedong were revolutionaries but the symbologies that they represent are completely different - they both committed atrocities like Guevara was a harsh disciplinarian who sometimes shot defector and deserters were punished as traitors, and Mao suppressed what he claimed to be counter-revolutionary speech, his reform to tackle poverty involved executing many landlords, and his land reform towards agriculture led to many economic disasters which to lead famine and poverty.
And to my knowledge, when Mao realised his actions towards the proposed "the Great Leap Forward" were a failure, he tried to find other methods which is what lead China to become a more independent nation.
Now I am saying this mostly from the knowledge that I have acquired about these two individuals but it is surprising that they were both supporters of the same ideology but end up with different symbolisms.
This might be a difficult question for people to answer because it largely deals with why contemporary people perceive historical figures one way or another. If I were to answer it simply through guesswork from what I know of the history it'd most likely be because the scale of deaths/oppression caused by Mao vs. Che are not even close to the same ballpark. The Great Leap Forward alone caused a famine that killed between 15-60 million people. Even with the most generous of estimations and liberal crediting of responsibility Che is not responsible for even a fraction of those death.
Are there perhaps more specific details or questions you have about them? This is a pretty broad question that isn't easy to answer within the guidelines of Askhistorians.