Burling said he is pleased with his start to the regatta but is conscious the competition will heat up now racing moves to the gold fleet.
"I did well in the light and shifty weather [on Saturday] and [yesterday] was as good. I put a lot of work into improving my game for this event," he said.
"We were in flatter, more manageable water than the yellow fleet, but even so, I dropped off the foil at one stage and fell back to 11th, but I still got back and won. Everyone had a swim, or crashed or overtook."
Burling singled out Outteridge, his main rival in the Olympic 49er class, as the key threat to the world title.
"Both of us have different commitments now - me with Emirates Team NZ and him with Artemis Racing. We're still good mates, but things are slightly different now. He is my biggest challenge."
Brits Chris Rashley and Chris Draper and Australians Tom Slingsby, Iain Jensen, Josh McKnight and Scott Babbage are the other big threats for the title.
Tuke was the next best Kiwi in 18th, while fellow Team NZ members Ray Davies (33rd) and Dean Barker (35th) also qualified for the 10-race gold fleet, but barring a remarkable turn of events they are not in the position to challenge for the title.
Australian Glenn Ashby, Team New Zealand's wing trimmer, suffered extensive damage after a crash with one of the American boats in race six, dropping him down the board and cutting him out of Race seven, for which he will ask for redress.
"Lucky I'm a sailmaker, so I can fix that, but I've got a broken foil and bow damage that will take a bit of fixing. Apart from that, it was a tough and bumpy old day, but awesome sailing."