First of all, sites are weighted on metacritic according to a bunch of criteria, the most important of them is the size and popularity of the site. Multiplatform sites scores always matter way more than console exclusive sites, because... well they are not locked on only one platform.
That said, right now there are a good handful of reviews of SoT that are, at least above 75, with some being above 80, and one of 86 that is not a Xbox site. Why seems more wrong a nine than a 4, or a 5? because they are an xbox site? Why is valid an xbox site that gave the game a 73, than one that gave it an 8? Only because one score is nearer to the Metascore?
What I can see is a polarizing game that have connected a lot with some people, and the majority of the rest find that in it's current state is just meh. That kind of game can score a 9 for some, and a 6 for others, and that's ok in both cases.
Tim and The Princes...







