uh um cough cough bullshit.....
144 pound dude hitting a 250-60 pound 5'6-5'9 dude in the face, and they have huge traps. A body tenses up in a fight, a mans neck ain't gonna snap back, you need more force. One of the reasons why Flex Wheeler servived his car crash the doctors said is becaused he was so muscled. Yeah, he broke two of his nck vertabrae, but, think what would have happened if he had a skinny neck.
Take a look at a Belgian Blue's neck, there is no way you can twist their neck with their horns, like someone could with a regular steer and bulldog it. It is too damn muscular in the nck region.
That being said, the traps stabilize the neck and head.