ATTENTION: Aspect Arena Achieves
It keeps them from attacking your crystal carriers and keeps them from going and getting crystals also.
Actually it awards 2 points per kill. I had a match where no crytstals were delivered at all and the match was decided solely by kills.
Thought it is true: there are no achievments associated with killing non crystal-bearer – or match winning for that matter (which I found a bit odd).
It keeps them from attacking your crystal carriers and keeps them from going and getting crystals also.
A team with 3 people going after crystals with 2 people keeping their opponents occupied in the center is going to have more achievements earned and more games won than a team with 1 person going for crystals and 4 people fighting those 2 people in the middle.