Serono will keep up the bombast b/s until published numbers prove the statements wrong. They can have their "forward-looking statements" until known facts prevent them. Serono is playing the time gap for all it's worth. While I can't blame them for putting on a pretty face as long as they can, many of their shots at Tysabri are below the belt.
When the Ty numbers crush Rebif, it could not happen to a more deserving company.