isnt that what the actual review is for? covering your ground and justifying your score? why do you need different scoring categories when it will all be laid out for you in actual words, which are much much more powerful than just numbers?
Yes, but it's a nice component IMO. Sometimes people on the go don't have time to read immediately but place value on the score. For example, years ago I bought Moneen's Red Tree based on the AP score without reading the review. Foolish (but was a superb buy) and rare maybe, but it happens.
And, not to be mean, but sometimes AP reviews get a little long winded when you just want a general opinion.