They're pretty different. Adwords-driven brochure sites usually have measurable conversions. You can immediately measure the ROI for left aligned text, and cent

They're pretty different. Adwords-driven brochure sites usually have measurable conversions. You can immediately measure the ROI for left aligned text, and centered text. If the centered text gets a higher ROI, it'd be pretty weird to go with the left aligned instead. Design on something like Google isn't quite as easy to measure. A brochure site is designed to lead to a conversion, and likely to be only used by the user once. Whereas a site like Google may be used day in day out.