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.
Raiders
The Cowboys have won more Superbowls (5 versus 1), but the Bears have won more NFL championships overall (9 versus 5). 8 of the Bears 9 championships were in the pre-Superbowl era - all of the Cowboys championships have been in the Superbowl era.
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).
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The Pittsburgh Steelers have won an unprecedented six Super Bowl championships. The Dallas Cowboys are in second place, tied with the San Francisco 49ers at five.
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Five. The Cowboys won NFL championships in 1971, 1977, 1992, 1993 and 1995.
Cowboys have won 5 superbowls, the Redskins have won 3.
dallas cowboys
They have 9 World Series Championships and 15 American League Championships.
The Dallas Cowboys have won five Super Bowl titles; the Raiders have three.
The Dallas Cowboys. They've won the NFC Championship eight times.