Personally, I've found I spend
more time working on a 5 point scale. It makes for some tough decisions, and more analysis. It's easier to toss out a 87 than to decide between 4 or 5.
Had we still been on a 100 point scale, I would have given Ridge Racer a high 80's .... maybe even as high as low 90's. But with our scale, I needed to make a tough decision .... was it a truly exceptional title, or was it just really, really good?
Honestly, this is a fuction of the marketplace. We've considered dumping scores completely, but scores are important. The aggregators (gamerankings and the like) need scores, and they drive traffic.