I wouldn't put Barnett in the same category as Stern. Sure, both manage to get projects done, but Barnett has no taste and builds cheap unimaginative, downright mediocre designs. Even when he hires a noted architect like Portzamparc or Gill, he constrains them to building cheap gaudy boxes. All Barnett's buildings have got going for them is height.
Stern, on the other hand, doesn't cut corners. He teams up with good architects and lets them go wild.
Don't get me wrong, I'm grateful for 225w57, but it could've been better with a developer with better taste.