Mozilla’s Firefox 4 and Internet Explorer 9 are sparring over each other’s HTML5 capabilities. Microsoft says IE9 achieves 99% compliance with HTML5, compared to Firefox’s 50%. Mozilla’s “evangelist” Paul Rouget fires back with a blog post titled “Is IE9 a modern browser? NO” Microsoft says it has submitted nearly 4,000 HTML5 tests to standards bodies. The HTML5 standard won’t be finished until 2014, so the posturing is mostly for public relations.”]

