I actually sort of agree.  I often (well, semi-often) see girl snowboarders throwing down in my local park as hard or harder than women snowboarders seem to in comps.  I can certainly think of one off the top of my head who slays rails much harder than I've ever seen a female pro do.  I think its probably because they just recruit the best looking ones.  All of the snowboard ads featuring women are usually just a picture of the woman, as if she is a model, rather than her doing an actual trick.  Sad world, oh well.
That edit was awesome by the way, I hope I run into that chick next spring break in Mammoth haha.