Quote:
The system does not look at "In Match" statistics. At all. These stats are all included in a list above. The game only looks at your wins and your losses, and the strength of the opponents you play against.
Wrong.
Quote:
If you suddenly developed a whole new level of headshot ability, for example you’d find that your skill level would rise commensurately
Bungie.net : Inside Bungie : News
second paragraph under "Rank Amatuers"
apperantly it DOES matter if you get headshots, a high k/d Ratio and so on. I dont think MVP and medals really matter tho.