If you watch the video, you will see he drops his eyes right before the hit and launches himself. That is what the ref called. Watching full-speed, the ref made a determination, and it was because Chung dropped his eyes right before the hit.
I understand you disagree, and you can analyze it in slow-motion all you want, but I see the call. If he keeps his head up and hits him there is no call.
Of course, there still would have been defensive holding on Bodden to negate the pick, so it is kind of a moot point.