Speight then grabbed his first of the match but Auckland’s Kali Hala took the second half by storm scoring twice in two minutes to hand his side the lead.
However, with the last kick of the game, Speight raced clear of the Auckland defence to secure the title and he dedicated the victory to his teammates back in Australia.
“It means a whole lot to win this. It’s not only for us but for the whole Brumbies team back in Canberra,” he said.
“We’ve been though the whole season together and it’s great to end on a good note and take some silverware home.
“We went into that game just thinking of playing for each other and playing for the jersey.
“Against a tough team like Auckland, to get over them early is a massive confidence boost.
“I was fortunate to be on the end of some good passing and some good work by the other guys and it’s all about taking opportunities.
“The set up has been great and the quality of the sevens has been incredible and we’re building something great with this World Club 7s.”
Cox scored the first try of the match collecting the ball in his own half before running past two defenders and scoring in the right hand corner.
Despite being held on to by two defenders Speight had enough power to get himself over the line to claim his third try of the day.
However, Auckland began the second half much brighter and Hala, who scored a hat-trick against San Francisco in their quarter-final match, scored with four minutes remaining to give his side hope.
And the New Zealand side were soon in the lead as Hala grabbed the ball from the kick off and went down under the posts.
But there was just enough time left for one last play and Speight stepped up, dividing Auckland’s defence with ease, to sprint over the line and ensure Brumbies clinched the trophey.
And Auckland captain Orene Ai’i admitted his young side will learn a lot from their first visit to Twickenham.
“It was a good game we knew it was going to be tough,” he said.
“The Brumbies are a great outfit and they just came out and put the pressure on us.
“We had to play catch up rugby and when you do against a team like the Brumbies it’s going to be a tough day.
“I’m pretty proud of the boys. A lot of the young boys it was thier first 7s experience and to play at Twickenham is an opportunity they will never forget.
“I said to them I’m proud of their efforts and they’ll only be better for it.
“Kali [Hala] played really well and also young Sinclair [Dominkouich-M] but all the young boys sticked up. They’re all going to be great players in the future.”
“I think this tournament’s only going to grow and it’s a tournament to look for in the future.”
In the third-place playoff Premiership side Harlequins were seen off by Argentine outfit Buenos Aires 31-7.
Captain Lucas Alcacer stole the show with a brilliant offload to Ezequiel Valy to start the scoring before touching down himself.
And after he put the game beyond doubt with his second try Gonzalo Gutuerrez Taboda added another while Henry Cheeseman got a consolation for Quins.
By Steve Bond
WORLD CLUB 7s FINAL STANDINGS
1. ACT Brumbies (Cup Winners)
2. Auckland
3. Buenos Aires
4. Harlequins
5. New York City Sevens (Plate Winners)
6. Gloucester Rugby
7. VVA Saracens Moscow Region
8. San Francisco
9. Kuban Krasnodar (Shield Winners)
10. Vodacom Blue Bulls
11. DHL Western Province
12. Northampton Saints
[ Source: Australian Times ]