QS and RS definition can be found in Section 5 of the manuals.
5.3.3 Qualification Score (QS)
Qualification points are awarded to each TEAM at the completion of each qualification match and are dependant on the final score:
Each TEAM on the winning ALLIANCE will receive two (2) qualification points.
Each TEAM on the losing ALLIANCE will receive zero (0) qualification points.
In the event of a tied score, all six TEAMS will receive one (1) qualification point.
The total number of qualification points earned by a TEAM throughout their qualification matches will be their qualification score.
5.3.4 Ranking Score (RS)
Each TEAM on the winning ALLIANCE will receive a number of ranking points equal to the unpenalized score (the score without any assessed penalties) of the losing ALLIANCE.
Each TEAM on the losing ALLIANCE will receive a number of ranking points equal to their final score (with any assessed penalties).
In the case of a tie, all participating TEAMS will receive a number of ranking points equal to their ALLIANCE score (with any assessed penalties).
The total number of ranking points earned by a TEAM throughout their qualification matches, divided by the number of matches played (excluding any SURROGATE matches), then truncated to two decimal places, will be their ranking score.
Note: because your ranking score is derived directly from the match scores of the losing ALLIANCES in the matches you play, it is in your best interest to support your opponents and win by helping each ALLIANCE score as many points as possible.
OPR stands for Offensive Power Rating. CCWM stands for Calculated Contribution to Winning Margin. The explanation can be found in this white paper.
http://www.chiefdelphi.com/media/papers/2174
Look for the file "Team 2834 Scouting Database Presentation 2010.pdf"