Also, Google is a bigger target than Bing for the content farmers. Bing has fewer gray hats gaming its algorithms, so Bing's results will include a greater pro

Also, Google is a bigger target than Bing for the content farmers. Bing has fewer gray hats gaming its algorithms, so Bing's results will include a greater proportion of naturally-occurring content and less of ad farms. It's like comparing the security of say Ubuntu and BeOS by the number of vulnerabilities reported. Ubuntu has more, but that's a function of visibility and aggregate effort, not so much the inherent quality of each.