The Dallas Cowboys won back-to-back NFL championship games against the Buffalo Bills. In Super Bowl XXVII in Pasadena, California, Dallas dominated 52-17. In Super Bowl XVIII in Atlanta, the Cowboys prevailed 30-13.
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The Dallas Cowboys played the Denver Broncos in Super Bowl XII on January 15, 1978. The Cowboys won 27-10 in that game played in the Superdome in New Orleans.