UPDATED NEW ALGORITHM

RankedCvCCalc.java

public class RankedCvCCalc {
    
    public static void main(String[] args) {
        double teamOne = Double.parseDouble(args[0]);
        double teamTwo = Double.parseDouble(args[1]);
        //Now we have the ELOs, find the round diff and calculate based on elo difference.
        int rdiff = Integer.parseInt(args[2]);
        int rApplyDiff = 0;
        switch((int) Math.abs(rdiff)) {
            case 1:
                rApplyDiff = 8;
                break;
            case 2:
                rApplyDiff = 14;
                break;
            case 3:
                rApplyDiff = 16;
            case 4:
                rApplyDiff = 18;
                break;
            case 5:
                rApplyDiff = 21;
                break;
            case 6:
                rApplyDiff = 24;
                break;
            case 7:
                rApplyDiff = 26;
                break;
            case 8:
                rApplyDiff = 28;
                break;
            case 9:
                rApplyDiff = 30;
                break;
            default:
                System.err.println("WHAT THE FUCK");
        }
        double teamOneChange = 0;
        double teamTwoChange = 0;
        
        double multi = findMulti(teamOne, teamTwo);
    
        teamOneChange = rApplyDiff > 0 ? rApplyDiff*multi : -rApplyDiff*multi;
        teamTwoChange = rApplyDiff > 0 ? -rApplyDiff*multi : rApplyDiff*multi;
        
        System.out.printf("%f %f", teamOneChange, teamTwoChange);
        
    }
    
    private static double findMulti(double elo, double elo2) {
        if(elo - elo2 < -300)
            return 3;
        else if(elo - elo2 < -200)
            return 2;
        else if(elo - elo2 < -150)
            return 1.66;
        else if(elo - elo2 < -100)
            return 1.4;
        else if(elo - elo2 < -50)
            return 1.2;
        else if(elo - elo2 < -25)
            return 1.1;
        else if(elo - elo2 < 25)
            return 1;
        else if(elo - elo2 < 50)
            return 0.91;
        else if(elo - elo2 < 100)
            return 0.83;
        else if(elo - elo2 < 150)
            return 0.71;
        else if(elo - elo2 < 200)
            return 0.6;
        else if(elo - elo2 < 300)
            return 0.5;
        else
            return 0.33;
    }
    
}