The scoring system looks like the system the millennium used. 3 point for a win, 1 for a draw, 0 for a lose. The second number is the elimination differences. So "3/2" means they won, with 2 more players alive then their opposition. "0/-3" would mean they lost and their oposition had 3 more alive then them.
EDIT: Although Blitzkrig appear to have won their first match whilst losing 5 more bodies than their opponent??? Error maybe?
A useful addittion for next time would be to include who the teams were playing, although you can probably figure it out from the elimination differences.