Another statistical ranking like Dalt's and also much more accurate than Hollinger looking at past examples. This is worth taking a look at. You can save a lot of time if you don't care about methodology and skip to the graph and blurbs at the bottom.
Short version: Davis is in a league of his own. Beal, Lillard and Crowder are tier 2. Throb, MKG, Henson, Sullinger and Green all look legit. Whole slew of wings who are pretty fungible assets.
Barnes, Drummond, Rivers Leonard and Perry Jones have bust written all over them.
Barton and Gordon are two intriguing late first / early second round prospects.