Ok, so every hip drop, high tackle, chicken wing, ankle grab, shoulder charge and whatever, if it causes an injury, gets escalated to a sin bin? This is despite the fact that the great majority of indiscretions don't cause serious injury. Simmonson's dislocated ankle came from an awkward landing which could also come from a variety of other different circumstances such as leaping and catching a bomb. Luke's action wasn't premediated or intended to be aggressive like other examples of foul play. It was involuntary but also, for Simmonson, unlucky. A punch to the face is not a good analogy Sirro. Totally different beause it's premeditated.
Moses got accidentally slapped in the face. It could have broken his jaw. Sin bin?