The above title was just to draw people in... I don't think either is superior, but I personally enjoy skiing much more. Snowboarding is not better than skiing.
I apologize if this is a repost, but someone showed me afterbang.co.uk Here is an article from it that is sure to spark some argument.
Let me(or him) know what you think.
inb4: article is from june 2010-- the owner of the site commented in mid January 2011.