1. They're using their own version of WAR, but Mozeliak very clearly says it's similar to what is available to the public with some of their own proprietary stuff in there. So yes, you're wrong. Whether it's a good measure of anything or not is another story, which is math way above my head, but this argument is about whether or not MLB GMs use WAR, not if it's useful. 2. I will agree with you 100% that assigning dollar values to WAR is kind of an exercise in futility because the value of 1 WAR is clearly not linear as you go on up the scale. The difference in dollar value between going from 1 to 2 is huge compared to going from 4 to 5.