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 Gnu Swallow Tail Carver . 16 NS West . 15 NS Snowtrooper BIA
16 Burton Genesis X . 15 Now Drive
16 Flow Talon . 14 Flow Hylite