Annunen could've played in Heavyweights just due to his cheek size.
Hard to say, he's one of those prospects who was obviously too good for the Finland's junior system, but wasn't quite ready to play against men (which he played against the entire year). That's why he's sporting his awesome .891 save percentage. In comparison the two Czech goalers that went in the same draft are posting .900+ save percentage in Finland's top league, Liiga (Justus played in Fin AHL). Now that doesn't mean Annunen sucks as everyone is on a different development path, but it means he's still really raw which is what he was when we drafted him. Him actually coming over destroys a couple of development years which Avs obviously drafted him for. However, if Annunen wants to come over to play back against his age group, but in a more talented junior league I don't think Avs would say no to that either.
I suggest that he would probably be very good in the CHL and get an invite for Finland's WJC camp next season. When he plays against players his age, he's already quite accomplished. The problem is that the two Czech goalers that I believe went behind him in the draft are posting fantastic numbers against better competition.