gamerprinter
Mapper/Publisher
It is on historical record that hand to hand fighting was an important part of training for the ninja and swordsmanship for the samurai. Failing to incorporate that element into both classes is moving away from Pathfinder closer adherence to simulation versus balance for class design. I don't care for it.
Get the ninja right, Paizo. For the love of the gaming gods, get the ninja right.
The question begs to be asked, in which slice of the historical record are you speaking. Samurai were epitomized with different weapons and tactics for different periods of time. If you're Japan adventure simulates the Edo Period (1600 - 1868) then yeah, swordmastery was a very important aspect to what is the samurai.
However, before 1600, especially 1200 to 1500, samurai is epitomized as the quintessential mounted archer. Katana was a secondary weapon only. Once you ran out of arrows or dropped your bow, that would be the only time your katana is unsheathed in combat.
The historic record is large and differentiated between one part from another. So no, one weapon is essentially samurai throughout the entire historic record.
Regarding the historic ninja - I can easily point to differing authorities on ninja that suggest their information is correct, yet completely opposite to one another. So which is correct? Both and neither. Ninja have always been a secret organization, so what martial arts schools call ninjutsu today, may or may not have any relationship to how the real ninja was, as there is no one resource to tell us for certain what is a real ninja. There is no definite ninja of history described in such detail that a specific class build could be attributed.
So which resources on anything make a ninja or samurai correct to you, may be incorrect or completely different that other sources. Only thing I can say for certain is that you nor I have the exact truth historically.
So claiming Paizo or anyone else is not fitting history - is only a blind guess by you and is just as likely a complete fiction. How one movie depicted a samurai or ninja is no kind of authority at all.
You have an empty argument, IMO.