I'll add some more categories to compare:
Hygiene:
Pirates: Not a priority and often not a possibility. Can't really bathe in salt water and don't need to be presentable since the people they deal with will dislike them for other reasons.
Ninjas: Must remain relatively clean and unscented or only approach downwind so the enemy doesn't smell them coming.
Diet:
Pirates: Biscuits. Fish. More biscuits. If having rickets was a positive trait, that would be fine.
Ninjas: Must eat a healthy, balanced diet to remain in peak physical shape.
Transportation:
Pirates: Galleons, Brigs, Flewts, whatever. On land they're slow but they're pretty good on water.
Ninjas: Walking, grappling hooks, maybe motorcycles or on rare occasions a van. Decent on land, no definitive water transportation.
Celebrity Icons:
Pirates: Long John Silver, Captain Hook, Dread Pirate Roberts and Cap'n Crunch. Roberts would win this argument hands down but his fantastic awesomeness is negated by the categorical placement of the Cap'n.
Ninjas: Ninja Turtles, Miyamoto Musashi and any handful of 5 minute celebrities from Yahoo! articles where some ninja beat up a bunch of would-be muggers.
Hobbies:
Pirates: Looting, plundering, stealing, robbing, gangplanking, poopdecking, timber shivering and hoisting the main sail.
Ninjas: Training, training, training, training and training.
Overall, I'd say the Pirates would have a more promising social life if they weren't crippled by their isolation and poor hygiene. The ninjas have far superior combat skills due to excessive training, better melee weaponry and not having a vitamin deficiency.
Post more categories!
[edit]spelling... first time I had to type out "flewt" :P[/edit]
