Dan O'Brien is obv. a better drafter than Wayne Krivsky. Just look at 2005, when DanO selected Jay Bruce. In the second and third rounds, DanO selected Travis Wood and Zach Ward, respectively. The year before, he brilliantly decided on B.J. Szymanski and Craig Tatum. Compare that to Wayne's terrible choices of Sean Watson and Chris Valaika.
Sarcasm aside, I think that ten years from now, people will be able to compare the 2006 draft with DanO's drafts and decide that the 2006 draft is the best of the three, regardless of whether Stubbs is a bust or not.