Very well said Bigbulls, that makes perfect sense and has the facts to back it up.

The only real differences between "short" broadheads and "long" ones is that the angle at which they cut their "slash factor". The longer B-heads take more time to reach their factor because the incline isn't as steep. This would be a benifit in slow moving arrows because they would glide easier than the short B-heads who have a steeper angle and reach their slash factor faster. Anyways as you pointed out to beautifully the short b-heads don't cut any less than the longer b-heads.