I'd love to see a more detailed technical analysis from you on this subject. I just feel like you and others in this thread are making these sweeping claims without having the technical knowledge to back it up. You might be right and you might be wrong (I don't know because I'm not a developer), but in truth you have absolutely no idea what you're talking about.
I think Bloodborne gets alot of flak due to its liberal use of chromatic aberration. It causes the overall picture to be softened and distorted, particularly around the edges of the screen. It causes distant objects, especially foliage, to shimmer and generally look terrible. But underneath that, the model work is great. The textures are sharp for the most part. There are impressive shaders at work and of course the cloth physics are great. The architecture and other surfaces make heavy use of tessellation. There's a ton of performance-hungry effects like fog and steam everywhere. Every area is super dense with clutter and a lot of it is destructible. So yeah, while BB might not be the most subjectively good looking game (mainly due to CA), I think its graphic tech is impressive and saying crap like "another developer could get the same game running at 60 fps" is nothing short of uninformed hyperbolic nonsense.
And for the record, I think the frame pacing issue is terrible and should absolutely be fixed. I'm not defending that.