Not doubting the basic valor, but this just seems like protocol for a bodyguard of any sort. Look up MOHs from other campaigns and you will see much more remarkable feats-truly "above and beyond". Maybe now just doing your job and saving lives is enough now, in the current PR climate.
Lookup the definition of valor. The Army doesn't really want martyrs.
He put himself in harms way throwing himself on top of a suicide bomber...similar to throwing yourself onto a grenade. That is not a common protocol.