I really think the issue you are getting at is abstraction, not subjectivity. A subjective stat would be if I created Ashbury's All-around High-performers (AAH!), which is batting average, plus a value that I choose for each player. Bryce Harper batted .249 last year but his AAH is .749 because I think he's a hell of a player and I give him .500 more. Ehire's AAH is just his .251 BA because I think he's only OK. You don't want to know what AAH I assigned Pedro Florimon a few years ago. Harper had exactly 100 RBI last year, which sounds like a made up round number but is actually computed in a way that MLB has defined for over a century now. Harper had a bWAR of 1.3 because of a formula some guy developed in 1995, or 2007, or maybe 2013. (Actually RBI has gone through changes in its time too - I'd have to go back and check the specifics but runs scored on sac flies and double plays counted or didn't count depending on which season you are looking up.) If you accept the framework, you can verify the numbers in each case. What both of these objective stats leave unanswered is, "... and this is important, why?" RBI is situational, so that for instance a player who was hurt for half a season will appear less valuable, and a guy with weak-hitting teammates will get fewer chances. WAR tries to figure out how a player correlates to his team's chances of winning. The importance of either stat depends on what you want to use it for, and subjectivity definitely comes in there. As a different example, FIP has importance to some people, because studies have shown that it is a better predictor for the next season's ERA, than is ERA itself. FIP is also not subjective, as you can check any website's number by computing it yourself, but its use certainly is subjective, as we saw for instance with Ricky Nolasco. The difference, to me, is that RBI faithfully records what happened. It's extremely concrete. WAR and FIP are both abstractions. There's no such thing as an actual Win in the standings being allocated to anyone but a particular pitcher (unless you are a Bill James acolyte) so WAR tries to remedy that - and there are other similar remedies to consider instead, for instance BJ's own Win Shares. FIP tries to recognize that pitchers sometimes run into hard luck, and again there are other remedies for that if FIP itself bothers you, or you can stick with ERA and its ability to record what demonstrably did happen. Sorry to wax philosophical. My recollection is that you aren't averse to peeling back the layers of the onion a bit, now and then.