I'm fairly certain you're not trained in Ninjutsu.
Also, the entire premise of your argument is flawed. Pirates don't try to sneak around and attack. So saying their pegged leg prevents them is silly, because that's not what they do - at all. That would be like me arguing "Ninjas can't sail a ship, so they'd never catch the pirates, and the pirates could just shoot at them from the sea." It's obvious that Ninjas don't sail, it's not what they're known for at all, so it's a moot point.
And stop adhering to stereotypes. Pirates don't necessarily have a pegged leg, or a eye patch, or anything.
Pirate said:
someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation
Sorry, I didn't read anything about pegged legs.
Also, your 'list of weapons' for pirates were also severely lacking.
They have like a billion types of swords (every pirate having stolen their own
: ) and they usually also have:
[ul][li]A dagger</LI>[li]Some sort of gun<LI>[li]A ship (that has canons on it)[/li][/ul]
No ninja ever carries all those weapons you listed on them at once, so don't even try to think your fancy list impresses me at all.
Numerous of the things you listed were just swords, and both Bokken and Bo are just wooden swords. I know that they're deadly when used properly, but still - one gun shot and thhat ninja won't be using his Bo to take down a pirate.