You can read the whole thing if you want. But the upshot is that the former genre is about architecting the ending, while the latter is about losing yourself in atmosphere.
Both of the Owl and Raccoon books were outlined from the solution backwards before I started writing. While both the Sin and Nicki books chase a scene or sentence I found compelling.
To Guns is the first book I've written that's both. It has all the lush detail and moody atmosphere, but I finished chapter-by-chapter notes for the four main characters (Sin, Nicki, Mathieu and Meb) before I started writing.