That's not how it would work. Or at least it shouldn't be that way.You know what? I wish more publications were like that.
If they know what their fans are looking for, they know accordingly how to review the product they're looking at.
They give reviews from the fan's perspective and accordingly can give the sort of score a fan would.
If a company suddenly came out with a game that would actually be disdained by the fans, it seems more likely that they wouldn't give it a deserving score in the fans eyes.
It puts them on the same wavelength as the fans, it's a bit more mutual.
So you'd rather be told what you want to hear than what you should hear?
Like I'm sure every Duke Nukem fan wanted to hear that Duke Nukem Forever was gonna be a great game, but reviewers realized it was a shit and couldn't just say what people wanted to hear. I want the people who review games to be acquainted with the series or the genre but I don't want them to be (or act) blindly obsessed with it so even if it is a dog turd they'll throw a high number at it because it hits the right fanboy notes.
The reviewer should be a fan, not a blinded fanboy.
I think RupeeClock's point is that the review should be made by a person who has prior knowledge to the either the series or the genre of the game he or she is reviewing, if the famitsu reviewers are fans of Mario games or just platformers in general then it would mean that they're viewing the title from a platformer-fan perspective, giving people who are actually interested a better view on what to expect compared to other platforming titles.
Reviewing as a fan for fans allows the reviewer to go more in depth compared to the common everyday reviewer who just plays a game in a series (maybe for the first time) a few hours only completing the main objective before moving on to the next game.
Games comes in different genres so naturally gamers have different tastes, there is no universal definition of what a gamer likes.
Having reviewers review the type of games they like would most likely lead to higher review scores, yes, however this isn't necessarily a bad thing since you wouldn't be able to compare let's say two games with perfect scores if they aren't in the same genre which IMO is a much more fair way to do it.
For example a platformer with a 10/10 score shouldn't be compared to a sports game with a 10/10 score.
Duke Nukem Forever might be bad as a modern FPS, but was it bad compared to the other games in that series?
That's what a fan who enjoyed the previous games really wants to know.