In 'What's Ahead on Wall Street' for Thursday February 11, get ready for more earnings on tap. We kick off the day with PepsiCo (PEP) and WhiteWave Foods (WWAV), then in the afternoon, we'll hear from American International Group (AIG), Activision Blizzard (ATVI), and CBS (CBS). There are several reasons investors are interested in PepsiCo's latest report. Wall Street's estimates are $1.06 a share on revenue of $18.5 billion. Even though both the top and bottom line are expected to decline from a year ago, Goldman Sachs is bullish, saying we could see some good news at its Frito-Lay and non-carbonated drinks divisions. This tailwind could offset mixed results from Latin America. For instance, Brazil heading into a recession may dampen results since it's a major PepsiCo market. TheStreet's U-Jin Lee reports.