I don't necessarily agree with those players who were picked, but I also wouldn't rank Pierce at the top of the league in basketball IQ. That's not to suggest he's poor in that area, but I don't think he's elite, either. He takes a lot of bad shots, and is prone at times to going into iso-mode. I think he's a player that does great things, but doesn't always make the smartest decision possible.
(Of course, I wouldn't put Kobe or Carmelo in the "elite BBIQ" category, either.)