I think he got the better of Martone in the scrap despite the size disadvantage too!
Misa would be a nice fit with Smith, let them rotate center duties.
Really and truly, any of Martone, Misa, and Schaefer would be great fits with the Sharks' current build, and Hagens may simply be the most talented of them all. No wrong choice.
I will say I think Misa has the lowest ceiling of them all, but he has so many NHL qualities that I feel he'll 100% translate to the NHL, similar to Celebrini (in the sense that he plays an incredibly complete and translatable game, not that he has Celebrini's upside).