ive noticed this too, and im a snowboarder
i dont get it, i assume its because most kids who ski, skiied long before they started hitting park whereas most snowboarders just picked it up because they saw it on espn.
but then i watch ski videos and skiers go bigger in halfpipe, can drop muuuch bigger cliffs, and can hit bigger gap jumps because they can get more speed.
either way i give the same respect to a snowboarder or a skiier who throws down, who the hell cares which one you choose as long as you dont skiblade