The stat cast version agrees with this, Brewers rank near the bottom. There stats include difficulty of catch etc so they are a bit better. Not sure where to find those numbers, I just listen to their podcast. Is it based on where the player's starting point is or is it assuming everyone is playing straight up? It is based on where he starts on the field so it can't take player positioning properly into account. It also doesn't account for dealing with the wall. It does however account for break on ball, foot speed, direction you had to run, route efficiency etc. It also doesn't account for arm strength at all, this one is simply built for catch difficulty. It shows that the top fielders in the game can make easy catches that someone like Adam Jones has to dive for or simply can't reach no matter what.