As far as I know the Parkboard is the equivalent to the Bataleon Airobic and the Freestyle to the Evil Twin. Of these two I can give you an impression.
The Airobic is noticeably softer and great for jibs, rails and so on. It will do ok on the mountain. The ET on the other hand is a stiffer board that will perform better on the mountain but it will not butter or jib as easy. Better for jumps though.
It comes down to your personal preference. Focus on the park, get the park board. Focus on all-mountain, get the freestyle.