Sneaking, hacking, netrunning, different types of combat
these are RPG mechanics?
ARE YOU RETARDED?
Nope, I'm not retarded.
And if you had bothered to read the next line, you wouldn't have needed to ask. But since you obviously are a retard, here it is again full detail and very short words.
CP2077:
Netrunning need netrunner build
Gunslinger need gunslinger build.
Brawler need brawler build.
Ninja need ninja build.
Netrunner can't into brawling.
Gunslinger can't into ninjaing.
Netrunner build, gunslinger build, brawler build are RPG mechanics.
Witchers:
Geralt always swordsman. Some Geralt can't into alchemy, some Geralt can't into signs, but Geralt always can into swordplay.
Compare:
Witcher has Geralt always swordsman.
CP2077 has V as gunslinger, brawler, netrunner, or ninja.
Witcher RPG mechanics only support 1 type of gameplay with 2 styles of support mechanics.
CP2077 mechanics support 4 types of build with 4 styles of gameplay, maybe more.
If Grotesque has 1 apple and Prime Junta has 4 apples, then Prime Junta has 3 more apples than Grotesque.
Therefore CP2077 have deeper RPG mechanics than Witchers.
If this was too complicated for you I'm afraid I can't help you, some concepts just are too complex for some minds to grasp.