And there's way more Xbox games that support Dolby Digital 5.1 versus any form of Pro Logic support on the Cube. On the list, EA is the biggest supporter of Pro Logic II, progressive scan, and 16:9 mode. Sega's also a pretty big supporter. At the moment, most bigger releases get the Pro Logic II/progressive scan support, which i don't mind.
More developers will adopt the technologies over time, just be patient.