Benchmarks are hard, particularly for complex systems. The Census is a Flex application to demonstrate various methods of loading data in RIAs and see how these methods impact performance, bandwidth and client memory usage. Census renders a large chunk of data using Ajax ( HTML, SOAP, XML and JSON ), Dojo, Flex ( SOAP to AS and E4X, XML to AS and E4X, AMF3 and Paged). We can see the Server Exec Time, Transfer Time, Parse Time and Render Time easily.

http://www.jamesward.com/census/