(At least it used to be because) the paper's publication score, which is relevant for your quantified objectives (universities run by administrators and all), i

(At least it used to be because) the paper's publication score, which is relevant for your quantified objectives (universities run by administrators and all), is weighted by the journal's impact score, so e.g. one paper in Nature is 'worth' more than 10 in conference proceedings. Most people do publish 'working drafts', in practice the same paper submitted to the journal, on their own sites and to archives.