I think if you dug in to the numbers more you might find reasons why his offensive rating is higher than others. For example he didn't play in 8 games, those might have been against better defensive teams, or maybe he's played more minutes with Lauri than without.
I think he's also been a better distributor/connector than he's given credit for. His little push shot is also pretty reliable offense when things break down. Like I said, it's surprising, but maybe we're also missing something that he's doing well.