Smith's instincts are AHL caliber. That's what gives him problems. He turns a little too late towards loose pucks, he sees openings a little too late, he makes passes a little too late. It causes him to lose battles, and just generally not bring much to the table.
He's fine as a depth callup but the Cliche description is perfect. He's a warm body that doesn't really hurt you too much, but that's not an NHLer in today's game. He's just not good enough in any area, and is just ok defensively. Not good enough to make up for the rest, and you can see when he's out on the ice he's overmatched compared to most guys.
Martinsen on the other hand, I've never thought was a pure AHLer. He could end up there for sure, but he brings elements to the table the team needs. He's just effective in his role, and his shot, and drive the net move he has, give him a different dimension that most big bodied physical 4th liners don't have.
He committed to the 4th line role in ways Everberg and Rendulic didn't, in terms of playing a grinding physical game. He doesn't have Rendulic's hands, and he's not as good as Everberg defensively 5 on 5, but he doesn't have to be. He just has to be ok in those areas, and bring the rest that he does to the table, and do it on a consistent basis.
I never understood why people wrote him off because the things holding him back from being a consistent NHLer, were things he could work on. Skating, and adding a PK ability to his game ala McLeod. It was also his first year playing in NA.
From what I saw he definitely worked on his skating over the summer, as he had a much higher top gear, and more fluidity to his game. Bednar also gave him some PK time, so if he can continue to get better there, he will turn himself into a legit NHLer.