Technology is never an apples-to-apples comparison. Some time ago,
James Ward, an Evangelist for Adobe kicked off a comparison of Dojo vs Adobe's Flex/Flash. In Jared's
post, he takes issue (and rightly so) for the methodology James used in comparing the two. It's also an interesting look at how JSON data can be optimized depending on the payload your sending between the client and server. Enjoy.