Flames forward Elias Lindholm said hockey IQ is the most impressive part of Pettersson's transition to the NHL.
"Some stuff he does, the small plays; you can always talk about toe drags and stuff like that, but I'm more watching his overall game and all the small plays that he does to create time for his teammates," Lindholm said. "It's more of that that I'm looking for. Those highlight plays you'll see all over the place anyway. When you watch him up close, it's the small plays he does."
So what does the fast start and the skill mean for Pettersson?
Klingberg says there is no reason Pettersson can't average at least 1.0 point per game, which has been accomplished five times since 1995-96 by rookies who've played in at least 41 games: Washington Capitals forward Alex Ovechkin (1.31, 2005-06), Pittsburgh Penguins center Sidney Crosby (1.26, 2005-06), Penguins center Evgeni Malkin (1.09, 2006-07), Edmonton Oilers center Connor McDavid (1.07, 2015-16), and New York Islanders center Mathew Barzal (1.04, 2017-18).
Backstrom didn't even want to put a cap on the number of points Pettersson could have.
"He can go as high as he can this year, and he's going to get even better and better," Backstrom said. "So it's fun to see him do well here, and it seems like they're on a good roll there in Vancouver too, so that's good for them."
The Canucks, who play the Boston Bruins at TD Garden on Thursday (7 p.m. ET; NESN, SNP, NHL.TV), entered play Wednesday third in the Pacific Division (9-6-1); their 19 points are the same as the first-place Flames.
Pettersson, the No. 5 pick of the 2017 NHL Draft, gave a sneak preview to his potential last season with Vaxjo of the Swedish Hockey League. He had a league-high 56 points (24 goals, 32 assists) in 44 games and was named the most valuable player in the SHL. He then helped Vaxjo to the league championship with an SHL-best 19 points (10 goals, nine assists) in 13 games, and was named playoff MVP.
Being able to carry his SHL success to the NHL is the latest testimony to the growth of hockey in Sweden.
"Obviously it's a good sign for the [Swedish Hockey League]," Lindholm said. "He was dominating that one and proved now that he can be a dominant player here too. It's a good sign for the Swedish league and for Swedish players as well. It's fun to see so many young guys coming up. They're ready to go. It's just fun to watch."