I don't like CQC particularly, and I think that it's a waste of time playing it when I could be playing real elite (but i prefer red orchestra and arma to call of duty, so call me an old fashioned stick in teh mud) - however it can be a lot of (highly frustrating) fun at times.
It's a bit like, kill one, die one, kill one, die one, kill one, maybe kill one, die one. It's like that for everyone in the matches I've played - the games are quite close and even the top players are close in k:d.
Unless there's a total moron in the match, who everyone can get free points off - these guys are usually on your team, btw...
The ships and loadout have a big impact on your performance... it's pretty unfair, really.
The main thing that will get you better than everyone else is not having flight assist on.
Flying through gaps, close to the objects and through the tunnels helps if you are being chased, but kinda sucks if you are trying to shoot someone AND negotiate the course...
Often, I'll "take a shortcut" to the exit they might come out of, or just stop shooting as much and try not to smash into the wall.
Doing "the 180" in the middle of open space, when you are being chased and shot will just get you killed faster than if you were running away.
It can work if you have just flown out of line of sight, and /or have suddenly boosted to change direction. Chances are they have to draw an arc to turn around, because they have flight assist on.
People who don't use flight assist off tend to turn it off only when they want to do "the 180", and so will be moving in the same direction, but facing you. So you can just whack the throttle back and they slide out of range before boosting to try and come back - by which time you are already starting to turn for when they race past and you shoot them.
Powerups are the big, important things that will set you apart from the others.
They are always the best thing to aim for - but you have to get them to use them and it will take a while of using them, to know how to make use of them.
If one's a long way away and someone you are chasing to kill is going for it - don't chase them, cos they will get there before you and then be powered up and probably try to pwn you...
Some games, I'd just wedge myself into a small gap in teh scenery and wait for someone to fly past, then blast them. Like a cop. It'd work til someone knew you were there, in which case you'd be easy pickings.
Flying close to 1 or 2 teammates is super-useful.
So is TS if you are doing this, or some kind of voice comms.
In fact - the times I do best and we win most - it's times where we stick together and it's we kill one, we kill one, one dies, i die, he waits, i catch up, we kill one, we kill one, we kill one, i die, he waits, i catch up, we kill one, he dies, i wait... etc...
But... mostly... don't bother with CQC - it's not really worth the time investment, IMO - there's plenty of better games out there to spend time with. Hopefully it will become a mechanic of the real elite, in launched fighters in atmospheric planets, or something - cos then it'd be a blast.