Possibility of displaying Performance Ratings on the competency skill matrix graph

Summary

My client would like to use the Performance rating model to evaluate competencies, but the skill matrix graph will only display proficiency ratings

Content

In the performance process, an employee is rated on their competencies using the performance rating model. I have it currently configured so that score goes and updates an employee's profile. However, on a given employee's skills and qualifications page, the competency graph does not show their ratings. I filed an SR regarding this issue, and learned that the graph only displays competencies' proficiency rating. I was wondering if there was any way to change this setting so that the performance rating could be displayed.