Remote Desktop Protocol Comparison

Over at Virtualization.info they have an interesting blog with a chart from VDIworks comparing various VDI (Virtual Desktop Infrastructure) protocols to their new VideoOverIP protocol. The chart is very enlightening, but leaves out one big player: XenDesktop and their ICA protocol. I don't know if that was intentional, or just a glaring oversite. Either way, if you are evaluating VDI the chart is a good starting point for a feature comparison of the various solutions.