Rank increased/decreased based on calculation of "team contribution". So if your team wins, and you get 1+ kills or above a certain damage threshold, you get credit for the win and rank is increased. If your team wins and you get 0 kills and low damage, your rank is unaffected.
If you lose, but you get 1+ kills or above a damage threshold, your rank is unaffected. If you lose but get 0 kills and below a certain damage threshold you get credit for the loss and rank is decreased.
Each weight class could have certain required benchmarks, and lights could get spotting bonuses or something, not necessarily basing it solely on damage.
Edited by xenoglyph, 13 September 2013 - 06:05 PM.