South Africa produced a ideal record in pool play, along with Australia and the United States.
Captain John Moonlight padded the lead with a try for Canada, which finished seventh in the recent Vancouver and Las Vegas events.
Earlier yesterday, Kenya were no match for current series leaders South Africa.
Afrika and Werner Kok both scored for South Africa, while Sam Dickson dotted down for a consolation seven-pointer for New Zealand in referee's time.
Captain Lucas sealed the Quarter-Final win with a trademark dummy slicing open the Argentine defence from short range.
Elsewhere in the World Rugby series qualifier competition, Chile, Germany, Papua New Guinea and Spain progressed to the semi-finals on Sunday.
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But Neil Powell's men were put to the sword by Fiji in the final conceding four tries as the island nation secured their third consecutive title to jump up to second spot on the overall series standings. After dispatching Japan 40-14, New Zealand pushed Fiji hard but fell 17-14 and lost Iopu Iopu-Aso to suspension for a risky tackle. "We controlled the match superbly and there are so many positives to take".
The Fijians started the day by dispatching Canada 29-12 in the Cup quarter-finals, its 44th win in 46 meetings between the two.
The England Sevens Academy youngster would make his debut if he were to feature later against New Zealand.
"I knew they could do it - it was just a matter of time before we could get it done".
Australia will play the second-placed finisher in Pool D in either United States of America or Argentina on Sunday (12.58pm AEST). Two early tries by Siviwe Soyizwapi and Branco du Preez edged South Africa 10-0 ahead, but two quick tries by the French cancelled the lead. Credit to Fiji. I think they played really well and kept pressure on us when we had ball in hand.
But, after the ensuing kickoff, an infraction at the breakdown in front of the Kenya posts proved to be the difference as Hirayama's penalty drop kick went over.