If you look at the Phillies' regular-season statistics on Page W-16, you'll see Cliff Lee with a 7-4 record, which contrasts the 14-13 record he is listed as having this season in our Game 1 preview on Page W-2.
The difference is that Major League Baseball has always kept the statistics for the National and American Leagues separate when players move between leagues during a season. It was done in part because the leagues had never played each other during the season before the adoption of interleague play in 1997. And it came in handy through the years as each league had its own award winners (MVP, Cy Young, etc.) and seemed appropriate once they began having different rules (designated hitter).