I think I was one of the first people to suggest that Pettersson should go 1OA and I think I also started the Datsyuk comparisons, so no one could confuse me with someone who dislikes Pettersson, but I think you have to give the Calder to Dahlin if this continues.
What he's doing has only two precedents. The only 18 year old defensemen with a higher PPG average were his coach Phil Housley and Bobby Orr. He's also on pace to score more points this season than Orr, considering Orr only played 61 games, scoring 41 points. What Pettersson is doing is great, and he's going to be one of the best forwards in the NHL during his career. What Dahlin is doing is nearly unprecedented in hockey history. If his defensive game comes along, he could challenge for the Norris in his second season.