LOS ANGELES (Reuters) – Katie Couric won the battle of the new daytime TV talk shows, scoring the highest ratings for any such debut in 10 years. "Katie," the nationally syndicated lifestyle venture from the former CBS news anchor and "Today" show host, crushed the premieres on Monday of Ricki Lake and "Survivor" host Jeff Probst, as well as the one by comedian Steve Harvey last week, according to early Nielsen ratings. …