My problem with the most ardent adherents to sabermetrics its that they take their numbers as absolute proof of one player being better than another. I will freely admit that WAR is a far better evaluation tool than AVG and RBI, but please do not try to tell me that Player A with a WAR of 5.0 is 100% undeniably better than Player B with a WAR of 4.8. Sabermetrics is not THAT exact of a science. There is plenty of margin for error in park factors, strength of opponents faced, etc., to be that exact.
I'm not accusing any particular person on this board because I haven't seen that extreme kind of behavior here, but I have seen it plenty of places.