If you truly say you are for the proletariat you have to ground yourself to materialist analysis. If you think your theory has more potential that speaks for the people better, then its better that you cooperate with the party that understood the dialectics and led the revolution instead of useless chantings that the one party isn’t the way. There’s a reason their revolution was successful. Do material analysis first and realize why, than focusing on ideological thinking that “there are always differences”. if there are differences then there are ways to solve those differences within the party.