Judging a comp is almost as difficult as putting together, and stomping a clean run... and its never going to be perfect! Some will score too high, and some will score too low, and this will never change. The athletes do their best, the judges do theirs, and, well, thats all you can ultimately ask!
What Wallisch did was stomp the cleanest run of the day, with authority, and the judges rewarded him for it.
Props to him for laying it down in his FIRST big slopestyle comp opportunity of the year. Maybe next year they'll let him into the rest of the Dew Tour stops, and X...