well i started playing reach again since a month, so i can be ready for hcea 
ive played some arena games, always went positive, some games with 29+ killls where i still managed to team up with skids and lose those games
is it truth that the ranking system has changed, that the k/d ratio doesnt mean nothing anymore, just the win loss?
i was reading a thread where somenone had the same problem and went from gold average rank to iron lol