This is lag, not a ``HITSCAN ERROR`` which u just made up.....Lag is just a way of saying no one`s xbox`s are matching up. Thus his bullet doing something other than what he saw.
Lag? On XBL? NO WAY!That`s all it was. Your shot registered as going over the bunker and in his head. It just didn`t LOOK at way. These kinds of things happen daily.