But ok, Del Potro beat Haas 6-1 6-2 in IW right before beating Djokovic and Murray back to back, so hardly a selling point that one.
I'm not selling anything, I'm just saying that one achievement like Delpo's can't be considered as big as all Ferrer has done, because you are just considering Murray's and Djokovic's ranking and no their level of play. Murray had something like 3 consecutive 2R losses prior to this IW, he was crap all tournament. Djokovic was on the verge of losing to Fognini and was being destroyed by Dimitrov until he choked.
Maybe Haas wasn't so great at IW, but he certainly played fantastic tennis in Miami.
If Del Potro had more relevant achievements this year I could understand the thread affirmation, but that's all he's done.