the more i think about it mabey prime can win. It all depends on how well he can resist RKT's magic, i hear hes immune to highly, highly resistant to magic. If hes highly resistant to magic the id definetly say thor demolishes him. If hes immune to magic then in a nut shell.
Prime can defeat any magic user in comics due to the fact that hes immune to all magic and 95% of skyfathers are magic user's or mabey tech fiends. To make someone immune to magic is absolutly stupid.