Matt Simmons and I attended the Destination Marketing Association International (DMAI) conference this past July in New Orleans. During the "Everything Mobile Marketing Session," several DMOs shared their experiences with mobile websites, apps, games, including some helpful statistics for benchmarking and comparison.
Of particular interest was Visit Denver's experience with offering a mobile website alongside native iOS and Android apps. They found that the native apps generated much more usage than the mobile website, even though they have the same content and features.
I wrote a guest post for tnooz.com about the presentation, which you can read here: