February 16, 2011, 7:54 PM — Microsoft says IE9 is "the world's fastest browser." Mozilla claims IE9 doesn't even qualify as modern.
After Microsoft claimed IE9 achieves 99% compliance with HTML5, compared to Firefox's 50%, Mozilla Corp. technology "evangelist" Paul Rouget fired back with a blog post titled "Is IE9 a modern browser? NO."
The HTML5 standard won't be finished until 2014, so the posturing at this point is mostly for public relations. The World Wide Web Consortium has said it's too early to draw broad conclusions from HTML5 tests, but that's exactly what browser makers are doing.
Microsoft said it has submitted nearly 4,000 HTML5 tests to standards bodies, and that users can try the tests themselves - but only on an official Microsoft Web site.
Microsoft, which is also fighting a standards battle with Google over the codecs to be used in HTML5 videos, said this month that it has "the world's fastest browser." But Rouget begs to differ, saying it's no wonder Microsoft's own tests show IE9 knocking HTML5 out of the park.