Do you have anything to actually back this up or are you just hurling stones because you disagree with what you think happened?
Because they weren't in the same position of leadership (Che was a column leader for Fidel, Pot was a leader), they didnt believe the same things (Guevara was a Marxist, Pot was a Maoist), they didnt act the same way (Guevara led from the front, Pot didnt), they never met (duh), they lived in entirely different places (duh again), they lead and fought differently, they had different stated goals (Guevara wanted to lead a revolution to free the world, Pot wanted to free Kampuchea), and they didnt do the same things with the success they achieved respectively (Pot started a brutal totalitarian dictatorship and Guevara gave up a cushy position in Cuba to fight in South America and Africa for what he believed in).
The only thing these two had in common is they are disliked by people in the US and insisting otherwise, to me, smacks of severe intellectual dishonesty or unfamiliarity with the events being discussed.