The reigning world series champions unleashed all their attacking firepower in what was a breathtaking display of sevens rugby across the two days.
However, Shujaa's defensive frailties were exposed against Series champions South Africa who humiliated them 48-5 in their second match.
Tries from Andrew Knewstubb and Scott Curry brought New Zealand back into the match in the second period.
The US went on to beat Russian Federation 21-12 in the semi-finals, but were comprehensively outplayed 34-0 by Olympic gold medallists Australia in the final.
But in the dying embers‚ Tim Agaba drove over from close range to seal with win and secure the Blitzboks the maximum 22 log points.
Christmas at the White House - in numbers
The kitchen has already baked a total of 31,000 cookies, including 15,000 sugar cookies to keep visitors to the White House fed. Home tree Home is located in the Blue room: it is decorated with gold and blue ribbons with ornaments of all US States.
Fiji reduced the arrears to 12-7 when Jerry Tuwai went over for a try, but South Africa held on to reach the final. Cecil Afrika managed to scoop up the ball out the back of the breakdown and dot it down.
Smith was named player of the final but Senatla was among the best players at the tournament. The Pacific Islanders got the conversion and won the restart, but knocked on to thwart their chances of Dubai glory.
Scotland's Darcy Graham and England's Dan Norton top scored with eight tries.
Eden Agero put restored Kenya's lead thanks to some quick thinking as he rose off the ruck unnoticed after tapping against the ball and then racing clear of two Ugandan clutches score to make it 12-7.
But just as the New Zealanders were punished for an indiscretion so, too, were the BlitzBoks, who lost Rosco Specman to the sin-bin soon after the resumption of play after half-time. After an interception in their own half, New Zealand stormed forward through Sam Dickson but he got scragged short.