Derek Gillespie, the 2003 winner, also shot a 2-under 70 and shared third place with Central Valley Classic winner Erik Compton (68), second-round co-leader Clint Jensen (71), Barton Creek Classic champion Brad Sutterfield (71) and Chris Wall (70). That group came in at 13-under-par 275.
Higton held a two-shot lead at the start of the round but extended it to three around the turn. Moore got into the clubhouse at minus-12 after a 5-under 67 on Saturday so it was up to Higton to hang on for the title.
Higton did so with ease. He left himself with birdie putts inside 5 feet at three of his final five holes, then two-putted from 30 feet for par at the last to hoist the trophy.
'It was extremely tough today,' said Higton. 'I didn't play all that well. Emotions, feelings, nerves, there was a lot more to it I found out. My nerves weren't shot, but they were definitely there.
'This week, I was better than everyone else and that is special.'
The win was Higton's first on the Canadian Tour. He became the sixth American- born player to win in the first six events of the Canadian Tour's 2004 campaign.
Rafael Alarcon (71), Clodomiro Carranza (65) and Ben Pettitt (73), who was in second place heading into Saturday's final round, shared eighth place at 12-under-par 276.