A nice comparison by The Verge. As the author says, both phones take great shots. I think the sky looks better with the iPhone in the outdoor shots, but the rest of the scene looks better on the Note 5. I'm also surprised the low light shot looks that much better on the Note.
Camera comparison: Galaxy Note 5 vs iPhone 6 Plus | The Verge
Camera comparison: Galaxy Note 5 vs iPhone 6 Plus | The Verge