The knock on Stubbs is his swing. Peep this:
This analysis is done by a former pro pitcher-turned-scout named Carlos Gomez. I'm not saying this is some authoritative analysis (and the guy probably knows more about pitching), but it's a possible explanation as to why Stubbs would struggle.
#8 - Cincinnati Reds - CF Drew Stubbs
Crap swing. I reviewed his video more closely and discovered that his hands and his torso disconnect severely. In other words, his torso/hips/legs don’t really help him much in getting the bat moving towards the ball. When so much of the review is based on swing mechanics, it is easy to overlook the other parts of his game. OK, he looks like he’s a good athlete, so there’s hope. That said, I don’t like this pick here, not this high.
There are other first-round hitters that fare worse, but Stubbs is the highest-chosen to get that low of a grade. The Cubs' Tyler Colvin (13), Washington's Chris Marrero (15), and San Diego's Matt Antonelli (17) all got the same grade range, and Gomez thinks Boston's Jason Place (27) and Atlanta's John Johnson (24) are even worse.
Just one scout-based opinion.