The Southampton-born boarder became the first home winner of the freestyle event and followed it up in Antwerp with a steady display.
He finished with a total of 173.25 points, feeling at home on the 38.5m ramp - the biggest in World Cup history.
But it was home boarder Seppe Smits who made history in Belgium's first-ever hosting of a World Cup event.
He finished with 183.25, 1.75 ahead of Austria's Clemens Schattschneider and 3.25 in front of Patrick Burgener.
Smits, the 2011 world champion, claimed the maximum 1,000 ranking points to take him level with Japan's Ryo Aono at the summit.