Dogknot's point that those players contributed to the playoff run is correct.
VaP's point that overall, the combined careers of those players have been disappointing and haven't contributed enough is also correct.
Why does it have to be one or the other?
Well, both could be right (certainly the playoff teams were helped) but my point was to create some prospective. Each of these four carried expectations that no one else has (Cutch as already proving to be a great player) in this era of Pirate baseball.
I think a lot of people are sort of dazed by the last year or two - "what happened to this franchise that looked so solid...". I know I've focused on poor performance by Neal, Nutting and Clint, and they all bear responsibility for roles. But...
But the greatest failure is these four players, with off the charts expectations, simply haven't/didn't perform at a level anywhere near expectations. And EC is correct, above. I'm not talking about for a year or two, I'm talking about building a team that looked to have staying power for a long time.
To your point, I think a lot of people were taking the "Dream Outfield" more-or-less for granted for the next few years (a dream outfield that didn't include Bubba Starling, haha).

Maybe Taking Cole over Bubba is the problem - in a Pirate uniform he may have exploded, carried the Pirates all the way to multiple WS championship.
I was right after all!