Ross Jackson predicts Shaq Davis will be the TC stud this year
He needs to beef up a bit more to be compared to Calvin Johnson.
Having said that, he looks like a nightmare for a DB to cover. He runs disciplined routes, has great change of direction, good hands, and speed (...saw him outrun two defenders early in the vid below). Only thing I haven't seen is his ability to block off the LOS.
Also, like Ross Jackson said in his podcast, Shaq will have to be able to contribute on Special Teams.