scouting a guy like Jason Bay in the SD system is VERY different from scouting a guy like Jason Bay as a High schooler and/or college player, making a decision to draft him, deciding whether he was worth the asking price to sign him, developing him ect.
they didn't have to wait for them to develop by the way... they hit the ground running for the most part..
when the Pirates traded for a guy like Bay or Wilson or Sanchez, they were MLB ready they'd PROVEN something.... at the professional level
stark contrast... I see your point
but the Pirates were taking advantage of team's desperate for BIGGER IMPACT, IMMEDIATELY... that didn't mind over paying for a guy like Xavier Nady or Nate McClouth (whom by the way the Pirates signed BEFORE trading him)
if the Pirates don't trade those two "stars" of their 2009 outfield they would be winning at a 45% rate again this year.
obviously these minor details aren't remembered by anyone but the guys paid to tweet about it and obsessed fans like myself