By the love of Adanos. All masterpieces among the RPG genre are extremely unbalanced. Baldur's Gate 2? Can be soloed with certain builds and is extremely hard in another. Diablo 1 and 2? Some builds can beat the game naked where others rely a lot of gear. Might & Magic VI? Your party composition will determine the game difficulty. Demon/Dark Souls? Beating DS2 as a Rapier of Chaos(or spearman) Hexer or a Black knight Halberd Paladin is far easier than with a unarmored swordsman without a shield.
On VtMB, there are no way to make the Nosferatu curse(being deformed and not being able to even be seen by kine without breaking the masquarede) and not make a highly social game exponentially harder than a Ventrue gameplay.
Gothic is considered a masterpiece among the genre exactly because of immersion, variety and amazing sense of progression. All Gothic games(except arcania) have you going from nothing to one of the most powerful entities on the world. On G1, you can start as a nobody that a wolf can tear apart in a fraction of second and end the game as someone capable to defeating a archdemon who isw worshiped as a God. Gothic 2 follows the same formula and put the player in valley of mines on chapter 2, where he needs to think outside the box to evade facing much tougher enemies and later in the game, in the same region, now he can defeat the enemies that he was fleeing, giving a amazing sense of progression . Gothic 3 too. As a Water mage, on the beginning, i din't even had magic, i had to find someone able and willing to teach me, spend some levels only on ancient knowledge and once i learned my first water magic spell, i could only cast 6 or 3 Ice Lances per rest(3 if charged). In end game? A image worth more than just words
In multi player games SURE, having fully realism and historical accuracy can be bad. For example, Me 262 Aircraft was vastly superior to most allies planes BUT germany was terrible outnumbered on late WW2 stages. War Thunder at least on arcade mode put Me 262 VS cold war era planes. They had to do that or nerf significantly the plane performance. But in a SP mission, you can have the player having to deal with a outnumbered battle OR against much faster planes and it being interesting, fun and engaging.
Most awful things that we see in modern games, the ludicrous level of ludonarrative dissonance, the immersion breaking mechanics like cooldowns, the repetitiveness, etc are all due the "balance cult". Having a easier or a hard time in a SP RPG due your choices is not a problem.
The same applies to TTRPG's. What is the most balanced D&D edition? 4e. And 4e is exactly the most BORING to play. Everyone feels the same, there are a lot of immersion breaking mechanics and the game feel more like a TT-WoW-Clone, not a proper D&D game. To be fair, D&D 3.5e also took some inspirations on other video game RPG's, but they took inspiration on 90s CRPG's, not from wow. 5e is extremely streamlined but since is not homogenized like 4e, is fun to play.