The biggest surprise of the night was that X Games Aspen 2013 Big Air gold medalist Torstein Horgmo missed the cut for finals after falls in the first round. Horgmo has mostly owned Big Air competition in recent years, winning three gold and two silver medals in his seven previous X Games appearances.
Mark McMorris, the Big Air gold medalist from 2012, dropped out of the competition Friday to focus on slopestyle.
"With Sochi fast approaching," McMorris said, "I want to keep my focus on slopestyle here at X Games."
Canadian skier Roz Groenewoud won silver, and French skier Marie Martinod took bronze.
"X Games is huge, so I think I'm on top of the world right now," Bowman said. "I think the biggest thing was just coming out here and having fun, kind of just focusing on the skiing and having a good time."
All eight of the women's Ski SuperPipe competitors in Friday's final also are headed next month to Sochi, where the first Olympic freeskiing medals will be up for grabs.
Groenewoud, the X Games Aspen 2012 gold medalist, led after the first of three runs Friday, just ahead of Bowman. It was Groenewoud's first contest of the season after knee surgery in December.
Bowman bumped ahead in her second run with a score of 88.66, thanks to tricks like a rightside 900 and switch 720, enough to hold up for the win.
Japan's Ayana Onozuka brought big airs on her way to a fourth-place finish.