You're conflating HTML5 support and plug-in support. For instance: that Flash supports Vorbis does not mean that Flash-supporting clients can play <audio src="f

You're conflating HTML5 support and plug-in support. For instance: that Flash supports Vorbis does not mean that Flash-supporting clients can play <audio src="foo.oga">. It just means that the site can choose to deliver <audio> to one client and <embed> to another. The same situation happens with h.264. Which goes to say: this is a good thing for Theora, but it is not a victory over h.264. Even in the most optimistic estimate, including this kind of plugin-as-equivalent conflation, it would be a tie, and only in the single domain of playback in desktop browsers.