I have a theory that players who instalock duelist are in a sense boosted by the fact that the matchmaking system gives extra RR to people who have high ACS. What I mean is that if there are 2 people with equal skill levels, and one player...

It's understandable if it's in close quarters combat, but I see a lot of people not going ADS even in long range combat. Is there a reason for this? I regularly use ADS and still get frags just fine.