Is 49ers' read-option offense unstoppable?

Daily 49ers blog for NBC Bay Area website. The NFL's defensive coaches are working this offseason to come up with methods for stopping option attacks that feature running quarterbacks such as Colin Kaepernick, including talking to longtime college coaches who have years of experience against such systems. Yet Alabama coach Lou Saban says the Niners offense is unique among all others. http://www.nbcbayarea.com/news/sports/NFL-Working-to-Find-a-Way-to-Stop-49ers-Offense-202540841.html