Do note that his "JPEG" is really JPEG with a PAQ entropy coder, which is actually a new format and not at all decodable by a JPEG decoder. He does no tests on

Do note that his "JPEG" is really JPEG with a PAQ entropy coder, which is actually a new format and not at all decodable by a JPEG decoder. He does no tests on baseline JPEG. But it's useful to point out that a lot of new overly complex formats can't beat something as simple as that.