I am very sceptic about these 'early reviews', they tend to inflate their score alot. Ironically, the 'warez'-community has the most honest reviews. A great example was Oblivion, which got blazing reviews from left and right, while pirate-forums stated that the novelty quickly weared off, the level-system was bad, the A.I. shallow and so on. Guess which one that was right.
On the other hand, Half-Life 2 got great reviews from the illegal community. Several polls where made, where as much as 70-80% said that they will buy it and recommend it to others. Usually, 'big games' such as those that the gaming press loves, gets something between 10-25%.