There seems to be confusion between the Gini Coefficent and the Accuracy Ratio within SAS as well as in the wider Statistical Community

One of the above two measures is defined in terms of the Area under the ROC Curve and the other is defined in terms of the Lorenz Cumulative Accuracy Profile Curve

The difference is significant because one measure can be used to compare two models from different samples while the other cannot be used for this purpose.

In a ( binary logistic regression model within Credit Risk ) context, the one measure is sensitive to the ratio of "Bads" to "Goods" while the other measure is robust with respect to this ratio.