Median third line scorer in the NHL is going to be about the 240th scorer. Right now that guy is pacing for 31 points. People have overly high expectations for what 3rd line scoring looks like, even in today's NHL.
I'd also add that having a relentless motor and a fearless willingness to go to dirty areas is going to do as much to pick him up points in the NHL as good hands (not that good hands aren't all over his scouting report anyway). There's a reason Brandon Tanev has good production in this league and it's not his hands.
eta: When you do find someone whose motor and willingness remains a plus all the way through to the NHL, and they do have good hands, that's when you start finding the Hornys/Rusts/Hymans/Hagelins/Hagels/Lehkonens and so that are found all over the NHL as the gritty third wheel on a scoring line. Not saying that's what Howe will become (for one thing, not every guy carries it over and for another, I'm not sure this athleticism will allow him to) but that's the ceiling and sometimes that ceiling goes wildly higher if they find the right fit. This is, first and foremost, an effort league. It's really tough to out-effort NHLers but people who can do it get the best opportunities their hands allow and then a little extra.