Prediction begets skills. In black ops one most of my kills came from predicting enemy movement. In black ops 2 that doesnt matter since the future has teleportation, frame skipping, random hit boxes and even more lag.
Dont believe me? Good. Equip the assault shield and a someone is shooting at you. Keep facing them. Eventually they will kill you(if you dont fight back) despite the fact that you are maintaining eye contact to ensure he doesnt aim at your sides.