eviljoshing wrote:A QS is even MORE influenced by the defense behind a pitcher and the park he plays in then a win. A win has both teams compared scoring in the same park with the same park adjusted stats. Also, rain and other conditions that make defenses difficult account for both teams. A QS takes no conditions into consideration. It ignores the disadvantage of pitching in Fenway compared to Cleveland (about 10%) or Colorado to anywhere. There is no single stat that measure the quality of a start. The closest is probably strikeouts to walks ignoring hits entirely. Once the ball is in play in any way, the best you can do is pick your poison for which categories you want to affect the stat you are using. QS has just as many factors in it (defense and parks most notably) as a W (run support, so offenses of both teams and defeneses of both teams).
sure, but as you allude to at the end, it's not the defensive aspect of a W that people take issue with: it's the offensive. your pitcher can go 8 innings and allow one run and not get the win. or he can leave, having pitched a shuout for 8 innings and have the closer blow it for him.
quantitatively, a qs is more indicative of good pitching than a win. whether or not it's sufficiently already measured by other stats is a separate issue. but if you were only going to choose one stat to measure a pitcher's individual quality over the season, qs is clearly superior.