Coming battle of UI scripting languages?

Good CNET interview with David Temkin of Laszlo. He talks about LZX, his recently open sourced scripting language for rich web application development. LZX competes with XAML from Microsoft and MXML from Macromedia. Seems to me that a battle is brewing between these three. If any of them gain broad adoption, the web is in for an exciting facelift. My take:

+ open source, free, shipping & robust, works with Flash and potentially other runtimes (.net, Java, etc)
– small vendor up against giants

+ tight integration with Flash, shipping, support for Flash in the design community
– Flash only, server licensing

+ Microsoft’s resources behind it, supports web and desktop apps
– Windows only, shipping in 2006

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Partner at True Ventures. Team lead at Automattic. Advisor at Atipica, Bandcamp, Bigscreen, Handshake, Hatch Baby, Madefire, Piavita, Renovo Motors, and

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