are these trainings live or just like other games?

if you need a calculation i can say something...but you said that you have figured it out, anyway ill say it:
for every dice your opponent has, there is appropriate percentage you have to get to beat him, then you sum up all those percentages and there you go...
so you have opponent who has:
1 - you ...

cant you recruit those guys who like to shoot things...those from 18 and under...there are some good players

im with you guys for now...

count on me

Well...how about this... You make a small form for users that want to leave ratings. In that form they would answer simple questions like a, b or c (maybe d or sometimes just a&b). Those questions would be something like: <player being rated> is a) good-teammate b) bad-teammate c) something i don't ...