For me its people under valuing McLeod, and to some extent over valuing M. Savoie who is still an unknown at the NHL level and on the small side like Yamamoto was/is. M. Savoie and Yamamoto play different offensive styles with Savoie being more high end skill play driving and Yamamoto being more of a net front/finisher and supporting play (in Junior) but they will face the same challenge of size.
As for Tullio, much like C. Savoie his offensive development stagnated and that couldn't have helped his value.