How does Bierce's methodic writing style providing detailed description in a quiet, slow, suspenseful manner affect the reader

Bierce's methodic writing style that provides detailed quiet, slow, suspenseful manner affects the readers by sudden withdrawn to reality when they have accepted the fact that Peyton Farquhar has escaped. But he is dead already.  

Explanation:

"An Occurrence at Owl Creek Bridge " is a short story written by Ambrose Bierce. The story is about Peyton Farquhar, who is standing twenty feet above the water with his neck in the noose, at the beginning of the story.

The methodic writing style of Bierce providing a detailed description in a quiet, slow, and suspenseful manner, makes the readers believe that Peyton has actually escaped. But when Bierce slowly unveils the suspense, the readers get to know that he is already dead. This affects readers by hitting them with a sudden reality of what happened to Peyton.