User blog comment:Don7/Ch. 705: EPIC/@comment-14885023-20130410173800/@comment-5896530-20130410180728

Dudes, they are CP0... Remember that some of the Vice-admirals during the Buster Call at Enies Lobby had undoubtably much respect for Lucci of the CP9? That would indicate that he (Lucci) was stronger than a Vice-Admiral even at that point. This also indicates that CP0 is stronger than a Vice-Admiral (probably), since they are members of an organization within the Goverment even higher ranked than the CP9 (I think).