I take your point DM, as any rating system is going to have weaknesses. GK ratings are another weak area. Ruddy scored higher last year because he was making many more saves. In a game like Millwall his rating was low because they hardly threatened until they finally scored. If you are aware of these limitations, though, it is still a useful, if not definitive, guide for comparing players on the same objective basis. The most useful stat, IMO, is the Passing Success ratio, which is useful for comparing mid-fielders (though it can depend on how ambitious a player is in his passing).