The y-axis is the win-lose difference.
The chart is base on the Results.

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-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 100 Thieves NRG CLG Tribe Gaming Team SoloMid Cloud9 Complexity Immortals