Who is more deadlier a ninja or a samurai?

Answer 1

In the right hands both were incredibly deadly. I'd give the "edge" to the katana, as a broad sword, while powerful, takes longer to reverse direction.

A katana and/or wakizashi in the hands of a trained samurai could gut and filet you in seconds. Being the lighter weapon, a katana is easier to reverse direction, engage multiple thrusts, and are incredibly sharp.

Samurai swords are seen by many as the greatest swords ever made, mostly due to their unique construction, deadly curved blade, incredible sharpness, and high level of training that the samurai received.

Answer 2

There is no single answer to this question. The main difference between a ninja and a samurai is that then ninja trained without a code of honor in battle, whereas the samurai trained with a code of honor in battle. Although the ninja had no code of honor in battle, they had a very strict code of honor related to family. In an open fight, a samurai would probably have a slight upper hand, because they were trained only for open combat. The ninja were trained mainly for secretive combat. It would be unlikely, however, that such a case would occur, as the ninja would likely have already killed the samurai by the time the samurai noticed the ninja.