Well, the number is too small. it should be 1491659340525x10^342^100 that bigger than biggest number out there. But I digress. Yes, Ninjas use to be that awesome, but If you were to ever see a Ninjitsu master fight, and compare them to a master of any other martial art, you would loose all respect for what they have become. See ninjas have 15 dons after becoming a black belt. that is five more than anyone else. Epic, right? Yes, until you see a thirteen don black belt get his but kicked on television by this guy who gets his but kicked every other episode. Watch Human weapon to see what I am talking about.
So no...I think that even though the pirates have a score of negetive 3, the very fact that they were able to take the ship gives them a higher score than modern day ninjas.