I have barely read anything here, but I'm already decided. Numbers mean too much in too many other ways to work for reviews, mostly because of school. The numbers you receive in school are based on accuracy. A long time ago, people figured out that it's better to be more than half-accurate for passing marks. Would you trust a doctor, teacher, surgeon, news anchor, or anything else that only was right half of the time? Of course not.
But here's the thing. You can't judge the accuracy of a game, a movie, a book, or any kind of art. That concept is ridiculous. An "art" can't be accurate. It can't be right or wrong. It can be tasteful, entertaining, captivating, innovative, and a number of other things.
The number-based score is invalid when it comes anything apart from accuracy. It only works for quantitative measurement. A game can't be 70% accurate. The only way this would work is if the reviews all had a solid, concrete equivalent to compare. For example, if you were to rate out of 100, a score of 85 would mean that there are 84 games out of every hundred that aren't as well done as that one, and 15 that are better. Now, obviously, since average scores tend to be in the 70's and 80's, this isn't true. So it's time to scrap the system.
Did you know that NWR has a few phrases that define their ratings? Why doesn't NWR just scrap the numbers, and substitute in those phrases, with perhaps a little extra changed for each number? It would give meaning, and would really show that NWR rates based on what they feel is right, not based on what each individual deems the correct score for a type of game. It would give reason where before there were just numbers.
Check out this:
http://www.nintendoworldreport.com/policy.cfm for more information. You'll see that NWR really doesn't rate with numbers at all, but they do it to match industry trend. I say that NWR should forget trend, and instead, go the next step, and forgo numbers when it comes to the overall rating. It might be worth it to use numbers in the smaller categories for a little while, but hopefully, in time, you can encourage the entire readership to take time to understand why a game is worth their time, or, perhaps, why it isn't.
Anyways, I'm sure Evan's right, but I beat him to eat over in General Gaming about a month ago. I just am not such an eloquent writer...