Such editors are the scourge of reporters and sub-editors. They are inveterate revisers of stories and markers of proofs and they focus attention on the news writing and feature writing side.
Other editors are production people. They have probably been promoted from the 'back bench' - the executives who control the putting together, or production of the paper. Their concern is particularly with pictures, headlines and projection. They see editing primarily as a job of presentation. They are fussy over the wording and fit of headlines, the amount of white space betwcen items on a page, the way a picture is likely to print and the visual balance between the top of one page and another as the paper is opened.