Do I have to do this again? I swear, it's like people don't even *try* to actually look at the historical iterations of a class before they go claiming that it *has* to be a given role.
Samurai has 7 major implementations:
- The first was in FF5, where Samurai was a high stamina physical class with Gil Toss, an instant-kill attack, a stun attack, and a high evasion passive.
- The second was Cyan in FF6, who has crazy high strength, defense, and hp while baseline equipping shield and all of the heaviest armor in the game. He's got Bushido which is just fancy sword techniques.
- The third was in FFT, where Samurai had balanced physical stats, an *insanely* strong evasion passive, and an ability list that included a lot of self buffs/heals, enemy debuffs/status effects, and some relatively generic attacks.
- The fourth is Auron who is strange but qualifies in some senses since he wields a "katana" and has "Bushido" as his limit break; his abilities focus upon specific stat reduction and he has 2 separate versions of Cover as well as the highest hp, Strength, and Defense amongst the entire group.
- The "fifth" is Yojimbo who fits the samurai mold, but he's got some wonky constructs thanks to being a summon (and further conflated by requiring Gil to be spent on him). He's got the insta-gib and generic beatdown otherwise.
- The sixth is from FFX-2, where Samurai has the insta-gib, a bunch of debuffing/purging abilities, a slew of excellent self buffs, Gil Toss, and a stat allocation with moderate strength, good defense, high agility, and high evasion.
- The seventh was in FFXI, where Samurai was originally intended to be a tank focusing upon parry but turned into a damage dealer.
- The final was in FFT:A2, where the Paravir fits the Samurai mold, with katanas, unleashed sword skills and the insta-gib. It's got crazy high physical attack and low defense but high evasion and high hp.
As such, the fundamental aspects that are occur most often with the Samurai are Gil Toss, the insta-gib, high evasion, and high hp. With the exception of the Paravir, it's exceptionally tough: it either has outright high defense and high hp or decent defense, high evasion, and high hp. It often gets a lot of substantial self buffs that serve to make it more durable as well.
If you're going off of how Samurai has actually been implemented historically, it's a tank: either an evasion tank or a parry tank, depending upon how you interpret Blade Grasp/high evasion in games without partial damage, with pseudo-mystical sword techniques and some monk-like abilities. The only real "DPS" Samurai are one that isn't even *named* Samurai (and, even then, you can get pretty damned tanky with it given the right loadout) and a metagame evolution of a class initially intended to be a tank that turned into a DPS (similar to how Ninja was originally intended to be a DPS and became a tank), which isn't really very reliable evidence.
This isn't to say that is impossible for SAM to get put in game as a DPS job, but it's doubtful given the historical role of the samurai throughout the series coupled with the design metagame not really having as many viable tank options as DPS options.