Mitchell Starc said Australia's 36-run loss to India at the start of the tournament allowed them to pinpoint their mistakes and rectify them to mark his side's remarkable surge in the World Cup since then.
Australia have already secured a spot in the final four and were buoyed by yet another crushing 86-run over New Zealand, signifying the momentum of Aaron Finch's side.
Australia's victory on Saturday did not come without a few hiccups along the way after an early batting collapse left them reeling at 92-5 before a rescue act from Usman Khawaja and Alex Carey allowed them to post a competitive 243-9 on the board.
Australia's pace attack soon after scythed through the Black Caps' top order as left-arm quick Starc extended his World Cup tally to 24 wickets this year in a match-winning five-wicket haul against the Trans-Tasman rivals.
Starc, who was player of the tournament in the previous edition, believed Australia learnt to identify their weaknesses during their only defeat in the World Cup so far against India.
"There's a calmness around the whole group, even when things aren’t happening for us.
"Since India, we've taken wickets in the middle regularly. We were all a little off in that India game.
"We didn't start well today but to scrap to a good score was fantastic for the middle order," added the 29-year-old.
"I'm stoked to be playing a part in this World Cup.
"Our chances are as good as any team, always spoke about peaking ahead of the tournament.
"We've got guys who are ready to go at different stages of the bowling innings," said Starc. "Jason has been fantastic in the past two innings, he's taken his opportunity with both hands.
Starc spoke highly of Finch's leadership as proving pivotal to Australia's dominance of late.
"We're finding ways to win. I think a big part of that is our calmness and I think that's probably led by Finchie (skipper Aaron Finch). He's been fantastic as a captain."
Finch was named skipper of a depleted Australian limited overs side last year following a timid performance under the previous captain Tim Paine.
Starc believed Lord's conditions helped him maintain attacking lines and lengths on a pitch that suited his style of bowling
"It was a worn wicket, so we probably had the rub of the conditions bowling second on that.
"It's a great result today but one win isn't going to win the World Cup."
Australia now have a rest period of a week before their final group game against South Africa, an encounter where David Warner won't be available with the team as his wife is due to deliver the couple's third child in Britain.
Starc said: "He packed his bag pretty quick.
"I think he's out there enjoying the win, and tomorrow (Sunday) he'll be a dad for the third time.
"Good luck to the Warners and I think when we see him in Manchester, he'll have his hands full again."