I fully agree with both your posts!
simple: why does little billy improve faster than little timmy? little timmy does not have the same athletic skills as little billy so he doesnt improve as fast.
riding park takes alot, you need muscle mass or you probably have no muscle control and therefore cant do jackshit. riding powder definityl takes leg and core strength as well. my sister and i always fight because she says its harder to cheerlead then to ski park...yet she cant turn skis
Maby not 'i can run 10k in half hour' athleticism but you need strong legs for sure, and a strong core helps.
Skiing park and big mountain and those types of things don't take huge bulky muscles but it does take balance and cordination. growing up i was a 3 sport athlete and some friends of mine had been skiing their whole life but didn't do sports and they wanted me to learn skiing so i did and within that season i was just as good as them and am far better than them now.
And also think about going off just a 20 foot jump and doing a 360 it still takes alot of balance wether you realize it or not.