The scoring system for ranged is broke, end of story. I used an arb for over 2 years, and my kills always kept me in the top 10 at least. After the new scoring system was put in place, my k/d stayed the same, but I had a hard time getting anywhere near the top. Pissed me off enough to respec to my current build (NA players know what it is...).
Now, although I don't get NEAR as many kills, I'm regularly in the top 10 by just holding my shield up and well, you know... Who cares about the definition of valour, the scoreboard needs to reflect your contribution to the battle, and for ranged, it most certainly does not. Just yesterday, my arbalest alt (can't leave it completely) was 8-1 at the end of the map, NO tw's(which take off too many points anyway) and a whopping score of 25 points... Needs to be fixed!
Stupid
edit: may be different for archers, my experience is with an arb. and NO, ranged should not have to melee to get points, unless melee has to use arrows to get them as well...