Hamilton - New Zealand captured both the men's and women's titles in the Hamilton round of the World Sevens Series on Sunday, repeating their double success at the previous tournament in Cape Town.
As the men extended their lead at the top of the table, co-captain Tim Mikkelson said it was important for morale to improve their home record.
"The boys were clinical and the boys that came on at the end did the job and we came away with the victory."
Regan Ware scored New Zealand's second try right on half-time when France were again down a man with captain Jonathan Laugel yellow-carded.
France, like Australia, disproved the pre-tournament theory that the decision to scrap the quarter-finals, with pool winners progressing directly to the semis, meant there was no room for error.
They drew level with a try to speedster Michaela Blyde just on half-time and then pulled away after the resumption with a second try to Blyde before Niall Williams and Stacey Fluhler scored in the closing minutes.