Moreau's involvement in Pichegru's treason is murky, but also demonstrates his duplicity. "The Directory summoned [Moreau] to Paris to account for the delay [in turning over the evidence of Pichegru's treason which Moreau kept secret until Pichegru was "outed"]. The explanations which he attempted to give were justly considered as subterfuges; and, finding himself regarded with coldness and suspicion, Moreau demanded and obtained permission to retire. He would doubtless have been visited with some heavier penalty, had not the Directory stood in fear of his popularity with the army." Sounds familiar!
I highly doubt you could make a case that Napoleon was the only one who wanted to be "supreme ruler," you can only make the case that he was the only one who actually did it.