This train of thought is where my question came from. The hill doesn't care if you eat it at 30mph on a bike or 30mph on a snowboard.
Eating shit on a bike off a 10ft. drop or 30ft. double into hard packed dirt, roots, rocks, trees, etc.. is very different than falling on snow (even ice) not to mention the addition of a 40lb. bike falling onto/into you. I've gotten way more injuries and scars in 4yrs of FR/DH mtbiking than I have in 20yrs of snowsports.
16 NS West . 15 NS Snowtrooper BIA . 13 Salomon Pow Snake
15 Now Drive . 14 Burton Genesis
14 Flow Hylite