I just saw the demo. Yeah it is easy to just say that he was wallhacking, however I believe he wasn't. Why? JohnnyBravO used teamspeak well, telling Bench where the enemy was. Also, he used sound. Some of his kills I could hear the opponent coming, and also, he just used his common sense by frequently checking doorways and common "pathways" players take in desert. Checking the map is useful, I could tell Bench did this because where his teammate(s) died is a very good hint as to where the enemy is. So then he can check the doorways/pathways leading out of that area.
And oh, predicting where the enemy is and where the enemy is going to is useful...very useful. :o
And oh, predicting where the enemy is and where the enemy is going to is useful...very useful. :o