First, the high score is a result of what psb said plus the fact that he runs fastbreak/press.
Second, his team is obviously very talented for a DIII squad.
Third, I am not bothered by Emerny's three shooting at all. At the DIII level, a 63 per isn't great but it's not bad either, at least in my opinion. It's not like he has a 25 in PER and is shooting like that. If he were going against DI caliber defenders, then a 63 per shouldn't get him those numbers, but he's not doing that - he's going against DIII players who aren't as good.
i'm not saying you are doing this for sure, but I think some coaches need to remember that players at DIII don't need "elite" ratings in a category (or even several) to be able to perform well against DIII talent. We can't think of them like we do DI players, who almost have to be "elite" in some areas to really do well because of the caliber of the talent on the other team.