I think a pass through is what it is.

If the arrow was really dull enough to not pass through when normally thats what you have happen.
Then, maybe that is what i would call too dull of a blade.

Far as the talk about talk about,sharp smoother cutting or dull ripping and tearing.

Think about this.
If you dont think it is efficient to have the blades sharp. Then why do most broadheads come out of the package sharp. There has to be scientific study proving sharp blades are more efficient then dull ones.Either that or common sense would make the decision anyways.