I am stealing this from another site but I have always noticed inconsistencies with such things as WAR.
Fantastic article from Baseball Prospectus, I'm not going to copy and paste because there are lots of graphs and formatting oddities.
The article discusses the differences between DRS and other advanced fielding metrics. For those who don't know (Leftwich) these metrics rate players by the plays they make in the field, compared to their peers. If a player catches a ball that almost no one would, he is awarded heavily, if he fails to make an easy play he is penalized. Over large sample sizes they offer a very good measure of a players defense.
The article focuses on how DRS credits players for plays they make in shifts. UZR ignores these plays, and credits it to the manager for deciding to use a shift. As the picture I posted shows, shifts can sometimes lead to a player being very out of position. DRS gives Brett Lawrie credit for plays he makes in shallow right field, as a third baseman. Obviously every other third baseman doesn't make that play, so the award is big. UZR does not do this. The result?
DRS: 21 runs saved
UZR: 6.6 runs saved.
This heavily skews a players WAR also. Baseball Reference ranks Brett Lawrie as the fourth most valuable position player in MLB this year.