Everyone realizes that. What are the expectations though? If Harper becomes a perennial 8-9 win player and Castro becomes a perennial 5-6 win player, giving up Baez (potential 5+ win player), and one of Almora (potential 4+ win player) or Soler (potential 4+ win player) is probably going to end up hurting you more than it helps you. If you do that trade 100 times, there are probably plenty of times the side receiving Harper wins, I just don't think it would be more often than that side loses. I do think it would be pretty close though. (repeating myself a bit from the previous post) Yeah, if Harper is going to be an 8-9 win player and Castro 5-6, then the difference is completely worth two very high ceiling but still A--ball prospects. I think the Harper side wins that trade 85 times out of 100. So you think there is only a 15% chance that at least one of the guys included besides Castro doesn't bust? I would say that is pretty pessimistic. I said I think it's a little less than majority that the Harper side wins, and you could make a case for it being 50/50, but I'd say there is at least a 50% chance that 1-2 of those 3 guys doesn't bust, and that's really all it could take to make it a mediocre trade. Plus you (ETA: that was imb who cherry picked 9 WAR for Harper and 5 for Castro) keep dealing with the most extreme of the situation. The difference in that hypothetical could be as small as 2 wins between Castro and Harper. If even one of Almora, Baez, or Soler become a 4-5 win player, the Harper side would lose that trade.