I would say that in my experience, an arrow can partially clog an exit and put less blood on the ground. But, the blood trail lastcan go longer and be more consistant.A blood clot,intestine, etccan fully plug the whole and not put anything on the ground.

Main reason I prefer a pass though though is full penetration and deer that is alerted less will usually not go all that far. Some may not know what evenhit them.