Yum Brands Inc (YUM.N), the home of KFC and Pizza Hut, is falling behind rival McDonald’s Corp (MCD.N) as the pair battle to revive flagging sales in China – a headache for Yum as it looks to spin off operations in its biggest market. A Reuters analysis of same-store sales data suggests McDonald’s is recovering faster in China than larger rival Yum as both seek to bounce back from a slew of food safety scandals dating back to 2012. McDonald’s said last week fourth-quarter same-store sales in China rose 4 percent, a second straight quarter of growth.