K/D in trials can be misleading. Obviously if it's high, you are playing pretty well. But depending on strategy a lower k/d may not mean much. This week for example, my team would have 1 or 2 snipe and I'd always use shotgun. I'd push up as far as I could to watch enemy movement and to provide cover for any rushers or flankers. Many rounds I'd have zero kills, but a revive out two, distract the enemy into making a mistake or provide time for snipers to reset and wipe them out. ToO strategy > K/D