There's a massive difference between realistic and entertaining in videogames.
Real combat with a zweihänder sword should be slow and ponderous with the wielder becoming quickly prone to fatigue. And anyone in metal armor should also plod stiffly; it's not silk lingerie. Knives should break more often, armor pieces should fall off when the leather straps used to attach them fail (from combat, poor quality, etc.).
Gunfighters should lose their hearing temporarily after exchanging volleys. Hearing damage is cumulative and permanent too. There should be a lot more smoke from firearms which should reduce visibility both for the shooter as well as the target.
And space battles should be soundless except for damage to your spacecraft (mostly in the form of hull breach alarms or infrastructure alerts like power failures).
But would this make for good gameplay? Absolutely not. Gamers would freak out within minutes into the tutorial.
There's a balance between realism and entertainment. And videogame publishers are in the business of entertainment. It's not a military simulator.
Oblivion kind of took account of these things, armour got damaged whenever hit so gradually became less effective, you had to keep repairing it, heavier armour slowed you down vs light armour and again vs unarmoured, weapons would also get damaged, you actually had a fatigue bar, so every time you jumped, dodged, swung your weapon it used fatigue, I think same with running.
I dont know if enemies/NPCs had these same limitations.
Lightning returns, blocking, dodging both consume ATB, which I suppose is akin to fatigue.
Tales of Zesteria, dodging consumes stamina, stamina also gradually goes down the longer since you last took a rest.
I prefer these type of mechanics vs doing unlimited dodging with no hindrance, as well as making everything dodgable with no damage, I think thats horrible gameplay. Another thing I find horrible gameplay is how in most of these games, bosses tend to always be very agile, even some big troll with a massive club as a weapon, has super quick attack animation the same dexterity as if they holding a pencil. The type of gameplay to promote fast instant reactions.