This is the table you want to look at for ranking points for utstats. 
A cap is worth 20 kills, an assist is worth 10 kills, grabs, pickups, returns are worth 2 kills, flag kills and seals are worth 4 kills, a cover is worth 6 kills. Frags/sprees dont give you that much.
If you get 100kills and 100 deaths the real score for each frag is 150 instead of 300 because you lose 150 points per death.
I added Events Per Minute to node-utstats-lite so players could compare more fairly for each map and gametype.
Also match averages per map/gametype: 
