His S% (7.1%), oiSH% (6.8%) and PDO (96.3) are all the lowest they've been in 7 years. In short, he's been incredibly unlucky despite still being on pace for 48 points.
He's still controlling 55.30% of Shot Attempts, 54.46% of Scoring Chances, and 55.16% of High Danger Scoring Chances while he's on the ice. Absolutely dominant numbers, especially considering that he faces opposing teams' top lines night in and night out while getting buried in defensive zone starts.
By all accounts, he's had another terrific season. He's just been incredibly unlucky.