UPDATE 3-Yum sales surprise, up on strength in China By: Reuters: Company News April 20, 2011 at 19:14 PM EDT * Shares up 6.4 pct after hours (Adds analyst's comment, details on peers, byline) Read More >> Related Stocks: Cheesecake Fact Chipotle Mexican Grill McDonald's Corp Starbucks Corp Yum Brands