Player choice.
The one thing Deus Ex has that The Witcher 3 doesn't.
And not the "oh, we get to choose the ending" or "cool, more XP" kind of choices.
But in how you play the game and how it responds in return.
Not whatever the hell you said here:
In D&D parlance, Deus Ex is a much better DM than The Witcher 3.
JRPG's are railroaded campaigns but at least they have the mechanical aspect of an RPG.
EDIT:
P.S. I'm neither white nor American.
lol okay so what do you mean the "mechanical aspect"? Your pre-requisite for an rpg prior to this was merely how the world reacts to you, and creating a character...
all of which Jrpg's don't do. meaning universally, amongst DEVELOPERS,
this wasn't a per-requisite to being an RPG. But by your logic, every final fantasy wasn't an RPG, or as much of one as fucking morrowind. Despite those titles existing prior to morrowind or daggerfall.
and since witcher 3 is largely narrative driven, you're choice tends to affect the narrative and exist within the narrative itself.
but if you only mean choices in gameplay that affect the world, well that's not necessarily an RPG thing...that exists in numerous action games, like half life 2, far cry, or bioshock etc. being able to approach a gameplay scenario in different ways isn't inherently a RPG thing at all, if that were the case MMO's aren't RPG's either in your mind. like I said prior. I think you just want certain titles to be RPG's, and namely focus on your ability to customize and do whatever it is you want lol....thats a limited view of what an RPG is, and only bethesda era shit.
you say you aren't a all american white kid, but you're concept regarding what makes an RPG an RPG are very western centralized. your main example of an RPG was a western game. you didn't even remember that Jrpg's existed when you made your assertion, lets be honest. otherwise, you would've covered your bases better.
and sorry kid, giving deus ex or fucking mass effect the title of RPG but saying the witcher 3 is an adventure game is a terrible take that literally I've seen no one but you make. are you so arrogant that you carrying this minority opinion on an island that no one agrees with, even developers, overrides everyone lol.
literally no one thinks this.
In D&D parlance, Deus Ex is a much better DM than The Witcher 3.
JRPG's are railroaded campaigns but at least they have the mechanical aspect of an RPG.
EDIT:
P.S. I'm neither white nor American.
what? Are you saying that you disagree with the idea that developing a character, strengthening them etc, isn't the old age fundamental of an RPG?
it's not choice, its not, killing anyone and how the world reacts, at an rpg's core....progression is what it's about. that's what RPG's all have in common. otherwise they aren't good RPG's.
your standard doesn't hold up, because Jrpg's don't give a fuck about the customization and world reaction philosophy; but guess what they do give a fuck about? development of the character throughout the game. My point is universal, yours is only western.
the witcher 3 does a FAR better job at this than any modern bethesda title. so it's bullshit to put it in that category, it also does it better than mass effect. Don't remember that feature in Deus Ex well enough to say.
How about you just admit that you prefer western sandbox rpg's and call it a day.
but instead you rather say "it's not an rpg UNLESS it's a western sandbox" lmao don't want to admit you only have taste for one type of RPG.