Lucroy is exponentially better than Peralta and Peralta is only under team control for an extra year (Lucroy might actually be cheaper, amazingly). Peralta is simply not that valuable, whereas Lucroy is on one of the most valuable contracts in the game (at least if you value him as an MVP-caliber catcher, which I do). Addison Russell was ranked somewhat similarly to the more optimistic valuations of Urias, and he was traded for a half season of Jeff Samardzija...