For 1 match won, Joe's team scored 1 * 3 = <<1*3=3>>3 points.
For 3 tied games, Joe's team scored 3 * 1 = <<3*1=3>>3 points.
In total, Joe's team scored 3 + 3 = <<3+3=6>>6 points.
For 2 games won, the first-place team scored 2 * 3 = <<2*3=6>>6 points
For 2 tied games, the first-place team scored 2 * 1 = <<2*1=2>>2 points
In total, the first-place team scored 6 + 2 = <<6+2=8>>8 points.
The first-place team outscored Joe's team by 8 - 6 = <<8-6=2>>2 points.
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