Hey, if anyone here is a fan of the Thrawn trilogy, I'm trying to remember: Did Joruus C'baoth possess his template's memories? Did Luuke Skywalker? If so, then the Force sensitivity theory may well be correct.
Joruus C'baoth did indeed think that he was the actual C'baoth, who in reality died when the Outbound Flight project was destroyed. As for the clone of Luke, all we see him do is fight and get killed without a single word of dialogue, suggesting that he doesn't have much mental capacity beyond an attack dog.