I would call that "compelling," rather than immersive. Immersion isn't the only way for stories to be good or powerful, and it's not always desirable, either. I think of immersion as erasure of the (reader's awareness of the) narrator, and no one's unaware of Watson while reading Doyle. Which is fine, because that wasn't the goal.

I don't mean to rank-order types of POV in terms of their overall effectiveness; they're effective at different things. I think that allowing the reader to erase the sense of being told a story is a strength of 3PL, but that doesn't mean other POVs don't have their own strengths. Or that everyone wants to be unaware of the narrator - clearly melannen doesn't. :)