After their Monaco nightmare, the race was going exactly the way the Briton and his Mercedes team needed it to - with him out in front, cruising unchallenged to the flag and Vettel in the minor points-paying positions.
"It has been an incredible weekend and I couldn't be happier", Hamilton said after recording his sixth win in Canada. "For the team to have come away from Monaco. understand the vehicle and then come here and deliver what we've delivered - a great blow to the Ferraris".
Perhaps not as much as Hamilton, whose 56th career win came on the track where he got his first in 2007.
Four-time champion Vettel now has 141 points, Hamilton has 129 and Finn Bottas 93. Both now have three victories apiece.
"In Maranello we will carry out a detailed analysis of the race, making the most of the data gathered as we prepare as well as possible for the next round in Baku", admitted team principal Maurizio Arrivabene.
Hamilton had no doubt Ferrari would be back to speed immediately.
With cars set to run on the same three compounds of rubber as had been used in Monaco, Mercedes appeared uncertain how they would stack up against Ferrari. "He's been dropped in the deep end, with critics and all those different things you have when you're 18 and you're experiencing them for the first time in Formula 1 - in one of the most hard seasons". Hamilton topped the opening session on Friday.
When Vettel responded, Hamilton did it again to create a new track record after the pair had delivered the first sub 1:12 laps in the circuit's history.
Qualifying would have been equally close.
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That gave his team something to cheer after young Dutchman Max Verstappen had his race come to a premature end with mechanical problems while running second and challenging Hamilton for the lead.
But then Hamilton pulled a stunning lap out of the bag to seize an emotional 65th pole position, equalling boyhood hero Ayrton Senna's career haul. "That's why we missed the slot to come in during the safety auto and have a free pit stop".
The Star Trek actor was interviewing the smiling Australian before Ricciardo said "I have to do something".
Everything that could go wrong, went wrong for Mercedes in Monaco.
Vettel qualified second, but a slow start and contact with Max Verstappen at the first corner left him on the back foot, with damage not being spotted on his Ferrari SF70H until after an early safety auto period.
He nearly clawed his way back up to the podium.
His teammate, Kimi Raikkonen, wasnt so lucky. "I think it was clear that today we could have been better than fourth, but that's how we finished and what is done is done", said Vettel.
"The pace was there and I would have liked some more laps to finish on the podium, the trophy here looked nice..." Fans voted Vettel their driver of the day for his inspired charge.
At the restart, Verstappen's punchy mood continued, moving alongside Hamilton as he entered the final chicane at the restart, but that put him out of position for the main straight and instead he held off Bottas at Turn 1.
"The first lap of the race usually is quite messy because the tires are cold, especially (when Sunday it) was windy and so on", said Vettel.
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