It's not even close to identical and it's dumbed down not because of difficulty but because of game design. The amount of actual adventuring and attention to detail required is removed in favour of remarking Arty boss fights over and over again. The world design stagnates and repeats the same exact thing, which isn't interesting when you already went through the same area before but done better. Another swamp which slows your walking speed, another catacombs, another Anor Londo. It stops being an adventure series and becomes a pandering series for fanboys. Because Dark souls 2 was flawed they played it completely safe with dark souls 3 and bloodborne is half a game at best because From just mashed bits from each game together instead of focusing on 1 game at a time. This video explains why the later souls games are dumbed down pretty well
https://www.youtube.com/watch?v=Np5PdpsfINA . And bloodborne isn't even playable, it has massive issues with it's frame rates to the point where it says 30 FPS yet stutters between frames so you might get a rush of 5 frames in the space of 1 frame properly timed and then a 4 frame delay which will eat your inputs because it's so poorly coded.
tl;dr they made bad combat games instead of good adventure games.