The distinction between an author POV novel and a standard first-person book isn't always clear-cut, but I've noticed a trend. An author POV story often feels more self-aware about its own construction. The narrator might directly address the reader's expectations, comment on narrative tropes, or even discuss the process of writing itself within the story. It's a layer of meta-fiction that a traditional first-person narrator, like Scout in 'To Kill a Mockingbird' or Holden Caulfield, usually doesn't engage with. Those characters are living their stories; an author POV narrator is often telling you a story, with all the editorializing that implies.
This creates a different kind of intimacy. First-person gives you deep access to a character's raw, unfiltered thoughts. Author POV gives you access to the storyteller's craft. You're not just following events; you're getting the director's commentary track played live. It can be incredibly effective for satire or for stories about stories, but it also builds a different wall between the reader and the action. You're always aware you're being told something, which can either distance you or pull you in closer depending on the author's skill.
Some readers find that narrative voice charming and witty, a bonus feature. Others find it distracting, pulling them out of the immersion. I think it really depends on the execution. A badly done author POV can feel pretentious or gimmicky, like the writer is winking at you too much. But when it's done well, it adds a rich, philosophical layer that a straightforward narrative might lack. The story becomes about the act of storytelling itself, which is a whole different ballgame.