I don't think how many people you kill necessarily means your going to win or do well. [...]
Exactly. That's why players shouldn't be rewarded according to kills.
Besides, doing that will only push everyone to rush blindy on peasants, and then you'll bid farewell to any tactics.
The best way to reward good players IMO would be according to DAMAGE done, not kills. That way you'd gain something for assists, even if the team loses at the end.
Sadly, it appears to be a bit tricky with the actual game engine, so we'll have to endure several kludgy attempts at appropriate rewards, until something good is found.
Waiting for that, just concentrate on staying a good player, hone your skills, and assist the team, notwithstanding the general level. It will pay someday
PS : oh, and enjoy the game.