Regarding game reviews:
Game reviews influence sales a lot. It is in the best interest of every publisher to be in good terms with the so called "professional" game sites and press.
So they give early copies of their games, host journalist events, give interviews and promote their games as best as they can.
The journalists in many cases return the favor by giving some extra praise if the game is generally good, or hiding some bad facts if the game is bad.
That's why nowadays in a scale of 1 to 10 most good games get 9s and 10s and not so good games get usually the 7s. The scale is not used as it was meant to.
That's the reason points can't be trusted in a review. You have to read the review and make your own score out of it.
If the next COD is utter crap it will not get any less than 7. If it is decent it will get anything up to 10. So you never know if it's just good or amazing.
Personal preferences play their part of course.
Excellent points all.
Just to follow up a bit, it's the 'journalist events' that are the real problem. Everyone talks about game reviewers 'getting paid' for favourable reviews, but doing that directly would be obviously illegal and a scandal waiting to happen. Instead, the game publishers invite the 'journalists' to spa retreats/5-star hotels. The publishers set each reviewer up in a room with top-of-the-line picture and sound equipment, give them great food/drinks, and then put them up in the hotel for a night. That way, everyone can credibly claim that they were never 'paid' for a review, but the benefits keep coming. How any 'journalist' is supposed to maintain their independence is beyond me.
Now to be fair, it doesn't look like Bethesda went that route for this release. But there are publishers who do this, and reviewers almost never mention that it happens because it would derail the gravy train. Ars Technica did a nice write-up on it a while ago, and it should be mandatory reading for gamers who read reviews.
I'd say if Skyrim generally scores in the 9.5 range, it's going to be amazing. 9.0 probably means it has some bugs and weak points. More than a few reviews between 8.5-9.0 will be cause for real concern.