Combat is basically TW2's combat, abit improved. I am not crazy about it, i do not hate it either. However i have absolutely ZERO problems with it. I am playing on broken bones, and i killed that level 7 wraith when i was level one deathless, and then in Velen(just started the area) i took up on a group of like 10 or more, level 10 Bandits(4 on horseback), while i was level 4, also without dying. Quen is still OP as fuck, if not more, because now your stamina regerates when it's active. Also this time around you can just back off and heal with food like Skyrim. If anything i think the combat is easy.
What sets apart the combat in Souls/Bloodborne to most other games is
1) An amazingly wide range of attacks, manually controlable by you. Fast attacks, strong attacks, jump attakcs, roll attacks etc. None of them are automated, you have to press the right buttons. In TW2+3, you bascially have 2 attacks, strong and fast. 3 if you count parry as well. Also there is automation. If your enemy is kinda far Geralt jumps to close the gap automatically. I dislike this.
2) Different moveset for at least each weapon class. Sometimes different movesets in weapons even in the same weapon class. Of course this would not make much sense in TW3, since Geralt is a specific person, who uses specific weapons and would not change his fighting style. But abit of difference on someting like straight swords vs curved swords would be nice. This way the BEST weapons would be more subective, since it would not depend entirely on stats
3) Movement and combat is VERY responsive. Especially in DS2 and Bloodborne. In TW3, Geralt's movement feels like steering a bus.
Just to note, that while i think the combat is VERY poor, compared to the Souls franchise, it is also VERY good, compared to something like Skyrim. And The Witcher games, despite me personally not loving the combat, are still my favourite games to have come out the last 10 years or so.