Interesting, but dead wrong on Abreu. His DWAR is 1.2 vs Duran's 0.3 primarily because he has the arm to play RF which Duran does not have, which is why he is in LF. Abreu's OPS is .811 vs Duran's .787. Duran's better against righties, .886 vs .828, but Abreu is better against lefties, .721 vs .583. Duran has the higher WAR, 3.8 to 3.3, because he's great on the basepaths and has played in more games. Both have 69 rbi's.
For my money, the two best Sox outfielders by a wide margin are Anthony and Rafaela. Anthony is another Ted Williams (not really) and Rafaela is fantastic in CF. His OPS in June and July combined was .860--so maybe he can hit too.
I think the reason why the Sox want to keep Duran and why other teams want him more than Abreu is that he has terrific crowd appeal--which Abreu lacks.
I have argued the Sox should keep all 4 outfielders, but now I think it makes sense to trade Duran or Abreu. If Ref stays, he can be the 4th outfielder. So could Campbell if he doesn't get 1b next spring.
Cora's mistake was in playing Rafaela at 2b so that Anthony, Duran, and Abreu could all play the outfield against righty starters. I understand the logic, but it absolutely did not work.