Speaking as a motocross racer, and park skiier. MX takes it. 39 other guys to the first turn all trying to holeshot, on 250lb bikes is plain scary. I've run over, been run over, eaten shit on big jumps, been in ambulances, connected with other riders in the air. It just doesnt even compare to skiing. I still see MX as my main thing and skiing secondary. Bottom line you arent skiing side by side with 30 others trying to get the same line off the jump as you