The release on his shot is one of the best in the draft. He's always looking to get open to shoot.
If he can improve his two way game, his passing and hockey IQ, he could score a lot of goals in the NHL.
The reason why I think some might have him lower, and I do as well is that some of these prospects aren't good enough in other areas to let their shot be effective. Because they can't keep up with the pace of the NHL game, they don't get the shots they got at lower levels where they were so much better than everyone else, and the areas they weren't good at didn't matter because those areas were still good enough against bad competition. I think Wahlstrom does a pretty good job of getting open at the junior level. I also think his size and skating will help him out.
I think there's the same risk with drafting Wahlstrom as there was with drafting Tippett last draft. He could turn into one of the best snipers in the league or maybe he won't be able to get shots in the NHL because the rest of his game isn't good enough.