Sometime during the college season when Barnes didn't improve much, PJIII and Quincy Miller lacked motor, Sullinger turned out to be a bit shorter than expected, Beal had a mixed season, J. Lamb looked like he took a step back from his freshman year, Marquis Teague didn't look ready, and people figured out that Kidd-Gilchrist couldn't shoot. But nobody disappointed more than Drummond whom people thought would be a sure thing.
I wouldn't say it's below normal. Just not as strong at the top as people were expecting. It's still a deep draft overall, especially for semi-talented PF/Cs.