This is exactly the reason that it's dangerous to compare the two, and also why I disagree with
@skribs assertion that knowing one weapon in a category will make you more competent at a different weapon than someone who does not know a weapon in the category.
As an example; let's say that I know how to use a stick fairly well. And part of my training is to constantly move it around, in arcs, in front of me. This is fine, and should come in handy if I need to use a stick. But then me and someone with no stick-related training both pick up an axe. He swings it intuitively, and it's a benefit towards him. I remember being told it's similar to a stick, so start treating it like it's a stick. I'm not expecting the weight difference, and on the down slash in faster than expect, and I end up with a nice gash on my leg. That wouldn't have happened if I hadn't bothered thinking of an axe like a stick, and just tried to use it like an axe.