It's closer than people are giving it credit for. Matthew's insane hot streaks at 40 goal rookie season still amaze me. I remember how he opened up this season. If he can find more consistency he'll be a top 3 goal scorer for years in the league IMO. Just depends on if you think Pettersson will make up for it with playmaking and defense. Although, fwiw, Pettersson is pacing 45 goals over a full 82 game season so who knows how high his ceiling is - even in pure goalscoring.
When all is said and done I'd probably give it to Pettersson so far.