FreedS[ohh]lave;1554150 said:
For the cats who want to base mvp on war David Wright ranks ahead of Posey in war
First, NO ONE believes WAR is perfect and a dead accurate measure of value. When the difference is miniscule, like the .1 or .2 between Wright and Posey, no one would call you crazy for voting for Posey.
Second, look at where each of their WAR comes from. The reason Wright leads is again, because of his defensive and baserunning value. Both Fangraphs and BR have Posey as being significantly more valuable at the plate, which is fair even though Wright has been excellent.
Baserunning clearly favors Wright despite his poor year stealing bases.
The issue in this specific case is defensive value. I've long said that advanced defensive metrics are problematic, especially in single-season cases. In many cases there is such extreme fluctuation in dWAR, etc from season-to-season that it makes it difficult to believe either. I generally prefer to look at many-year sample sizes to see if a given year is inline with the others. Basically, I don't think a player's defensive ability is as prone to "slumps" or down years like their offense is. Certainly not in the extreme cases we can see in some player's dWARs.
The second problem is that gauging a catcher's defensive value is still a challenge. The position is so outrageously different from any other on the field that it makes comparing them nearly impossible. Personally, I think dWAR undervalues their contribution, or at least doesn't consider the challenges of the position enough.
In this specific case, Wright gets a huge boost from his defensive value, which is out of line with the last few years. I think he's an above average defender at third, but probably not worth the 1+ win he's been credited with this season. And I think most would agree with this.
The problem with your post is that Trout isn't merely edging Cabrera in WAR. He's DWARFING his value. Oddities in account for value can cause errors, but not enough to make up for 2-4 wins.