As the strongest member of CP9, Rob Lucci's great power has been acknowledged even by Bartholomew Kuma of the Shichibukai , who said that none had expected Lucci to be defeated.  Even at the tender age of thirteen, Lucci was already known to be a very capable mass murderer, having killed 500 soldiers and a crew of pirates single-handedly. It should be also noted that Rob Lucci is the strongest member of CP9 in history by far;  with his Doriki at 4000, almost twice that of the second strongest member, Kaku's 2200.  Franky also remarked that his strength is levels above the rest of CP9 and later that, if it were not for Luffy, he was not sure how many of them would have been slaughtered.  Despite his first and currently only known loss to Luffy, it remains unknown whether or not Lucci's strength has changed during the timeskip. However he is now officially a member of the CP-0 , which is considered to be the strongest and the most exclusive of the Cipher Pol 's.