This document is a case study focused on the comparison of C-values and P-values as part of the evaluation product qs-STAT. It outlines the task of creating a report that integrates both process performance indices and process capability indices, allowing users to compare results effectively. The document details the definitions of process capability indices, specifically Cp and Cpk, which are based on within-subgroup variation, and process performance indices, Pp and Ppk, which consider overall process variation. It explains the configuration of C-values within the evaluation strategy and the importance of selecting the correct output points for accurate reporting. Additionally, the document describes how to customize reports using the Form designer and the significance of understanding the differences between AIAG-specific indices and standard calculations. The case study aims to provide clarity on the theoretical process improvement potential indicated by the differences between the indices.