I am also pretty positive (to say the least, I've spent a lot of hours on both games) about Kingmaker and Wrath of the Righteous. True, a lot of the enemies have inflated stats and encounters are harder than Pen & Paper but then again... it is a PC game where character death just leads to a reload. And there are all kind of difficulty levels.
Personally, I also enjoyed the Kingmaker kingdom building and Crusade system mini game (a bit less than Kingmaker's actually). I come into RPG from a predominantly strategy games so that was a nice transition for me.
That being said, I think BG3 goes a lot deeper on a psychological level, so it is a different beast enitrely.