How to add webform options together

Im trying to setup Drupal as an intranet and I would like to be able to add the results of a employee evaluation together. There are 20 questions using a grid type, the user selects on a scale of 1-4 how they rate themselves. Is there a way I can add those values together and display them to a supervisor?

My ultimate goal is to have the HR Manager able to request that a user fill out an Evaluation, and also request that users supervisor also fill one out. Then the results are displayed to the HR manger in a side by side comparison of them both. Ive included some illustrations below.

Here is the idea: http://imgur.com/wrobQ.png

Here is what we currently have and what I would like to duplicate for the most part: http://imgur.com/4bZga.png

Here is what I have so far: http://imgur.com/YMUUw.png

Thanks,
Jordan

_{Edited by WorldFallz - moved to appropriate forum.}