Laine started at left wing with Perreault and rookie right wing Kyle Connor.
"So far in training camp and preseason, [Laine] probably didn't play up to the expectation of most people," Perreault said. "I've heard that he was a big-time player in big situations and he showed it tonight.
"In the third, when we absolutely needed it with our backs against the wall, he came up big with a goal and an assist at the end of the game. That's what those special players do, they step up at the right times."
With the Jets down 4-2 and about 10 minutes to go, coach Paul Maurice moved Laine up to play with Scheifele and Wheeler.
"I wouldn't say I was assessing his game and then waiting for a sign," Maurice said of Laine. "But it's the first game for our team as a group and for a couple of guys, and it's a different league and a different style of game, and it's a hard game to play and it was (against a team) with very good sticks and they're very strong on them.
"So a little confidence goes a long way."
Wheeler said confidence was the catalyst for Laine.
"It's so hard in this league to build confidence," Wheeler said. "You're kind of starting from scratch. He knows what type of player he is and he knows what he's done in the past, but until you do it on this level, you just have that little bit of doubt.
"I think once you saw him pop that one in, he took off. It wasn't just the chances he was creating, he was winning every puck battle. He looked like a real force out there."
Laine got a roar from the MTS Centre fans during introductions. When he scored in the third, fans were out of their seats with a standing ovation.
"I'd like to get a streak going, score some more goals," Laine said. "It was just easier and easier to play after the goal. There's so much energy when you score. It was an energy boost and it was nice to go out there."