Yeah, I'm quite sure that Berggren's rate is not gonna last because it's so extraordinary. He is doing good things, but some of them have been lucky touches on the puck. But a whole season ppg = 1.0 (with +40 games) would be phenomenal season still.
Usually, in Finnish league, the hot season starter gets called for National team to play on Euro Hockey Tour, and after that these guys are exhausted, and have to play against a league where almost all other did rest on the break. Many times the hot starter goes to struggle after this.
Berggren get called for Team Sweden on Euro Hockey Tour...
It's kind of unfair thing after you have some success. But at least he isn't getting anything easy.