Yes, ninja's are actually even more ultimate than Chuck Norris, and we all know how ultimate he is :D
History tells that ninjas used to be farmers, who defeated the samurais for revenge.
Ninjas, or samurais.
Vikings are much stronger, but Samurais are faster. Also Samurais aren't afraid to die so probably Samurais.
If you mean samurai swords, then yes. If you mean actually hiring samurai, then no. Some ninja were former samurai however.
Ninjas
There is was no such thing as "ninjas" in Ancient History. Although movies have made them into black suited and stealth like warriors, the only type of warriors Japan had were the famous Samurais. Sometimes though, Samurais would dress up in black suits to spy on an enemy or to assassinate.
NINJAS are better
Naruto, non of the konoha ninjas can beat when his in sage mode.
Although Sakura became strong under Tsunades outh but she is yet still too week to beat a jounin such as Kurenai, as we can see Sakuras weepoints are the illusionist ninjas, and Kurenai is one of them, so no, Sakura is not stronger than Kureai Yuhi.
In Pokémon people travels the world gathering monsters and compete against each other, in Naruto people is trained to ninjas and tries to get stronger while killing foreign ninjas.
No. Samurais are from Japan, not Thailand. They Speak Japanese.
because pirates only use brute force to get what they want but ninjas are just cool