I think the suspension's about right. This kind of stuff has no place in the game, 'old school' or not. As for police investigations and charges, I don't think charges should be laid unless the victim wants it that way. The problem there is the 'code' in hockey would suggest Moore 'be a man' and not press charges.
I actually think it's worse than McSorley. McSorley was a goon and was trying to goad another goon into a fight. He missed (badly) and whacked the Brashear on the head, who then fell and banged his head off the ice. McSorley was suspended (and his career was effectively ended), which was the right call.
Bertuzzi was going after a player 40+ lbs lighter than himself who had fought someone his own size earlier in the game and since turned down all invitations. It was clear he was not going to fight, so Bertuzzi chased him around the ice, suckered him from behind, and pushed his head into the ice. More premeditated, and I would argue that driving an unconscious or semi-conscious person's head into the ice is far more dangerous than hitting someone with a stick (and if you look at the video, Moore was out on his feet after the punch).
With any luck, Moore will recover completely and Bertuzzi will return in a years time a player with more respect for the game and the players around him. Neither will ever be the same, however.
Finally, I really think Marc Crawford and the NHL deserve a lot of blame for this. Marc Crawford is notorious for sending goons out when games get out of hand, and if he didn't directly instruct his team to get Moore, I guarantee he implied they should once the game got out of hand. Further, while I don't think the league could punish Moore for the hit that started it all (it was cheap because Naslund was in a vulnerable position, but he did not actually break any rules i.e. he didn't charge, jump, elbow, use his stick, hit from behind, etc.), they should have immediately reprimanded Crawford, Brad May, and Bertuzzi for comments effectively putting a bounty on Moore's head and made it clear that any clear revenge tactics would be severely punished.