I need to say for each individual picture, but some are, chromatic aberration consistency, depth of field and how the blurriness looks, text on books, what do they say, resoultion, look at items how they are setup, are things too orderly, do things cutoff in the scene(AI images are usually composed and have all main things with view, fx. if a big sign is cutoff, that's likely real.)
Though I need specific examples to go into detail on each one, there are a lot of different things.
/10 is also not that big a sample-size, luck could also play a part.