I had to say Cowboys, because Raiders sucks!!
Raiders
As of the start of the 2010 season, the Cowboys have won 339 NFL games, and the Raiders have won 355. However, the Cowboys have a better winning percentage (.579 vs. .548).
Dallas has five Super Bowl championships; the Raiders have three.
As of the 2008 season, that would be the Cowboys. The Cowboys have won 8 NFC championships and 5 Super Bowls. The Raiders have won 1 AFL championship, 4 AFC championships, and 3 Super Bowls.
Through the 2010 season, the Raiders lead the all-time series six games to four.
The Cowboys are one of the world's most popular and valuable sports franchises, particularly in the area of merchandising.
If you are talking total games, not even close. Since 1920 here are the top four: Chicago Bears with 672 wins Green Bay Packers with 634 wins New York Giants with 585 wins Washington Redskins with 540 wins
As of April 16th, 2013, the Philadelphia Eagles are 16-11 against the Dallas Cowboys since 2000.
well they play different sports, the cowboys have caught more cows, and they where cooler shoes, whereas the packers have "dropped more soap"
Apperances: Packers, 49ers, Redskins, Raiders, Colts, Cowboys, Patriots, Vikings, Dolphins, Giants, Steelers, Bills, and Broncos.
RAIDERS
Raiders