The scoreboards speak for themselves in this game. I have seen the top killer on the losing side lots of times. I have yet to see a team with more experience lose the game. Maybe one class will sneak in (usually a medic), but overall the team with more experience wins, which means that their system of ranking seems to work.
Pretty well said.
@OP: I'm pretty obsessed with KDR as well, as being dead is no fun to me. I try to achieve 2.5+ in every FPS I play, and this one is no different. However, you are greatly misunderstanding the importance of buffs in this game. They're not there just for show, they're there to turn the tide of the battle over. One Medic on an attacking team, for instance, will immensely increase their chances of defeating the defenders as well as keeping his team in the fight while the objective is in progress.
The medic buff is a constant 75 exp. The ammo buff can be worth up to 150 if someone is out of ammo.
I dont really understand why the medic buff doesnt scale with the amount healed like the soldier buff does though.
Because Medics don't need anything that gives them even more experience. In my opinion, Soldiers and Operatives need a slight increase in the experience department (or, better yet, Medics need a decrease.) Very rarely do I, as a Soldier, get more than ~50 experience for giving out ammo, and that's with always keeping a keen eye out for people with low ammo, too. More often than not, a person dies before even half of their ammo is expended.
In the end.. if you consider yourself a superb FPS player and you're not in the top 3, you're doing something wrong, or are playing with other exceptional players. There is nothing wrong with the Brink scoring.