HB is is fine scrambling and would do well in this offense. I think his decision making ability and ability to read defenses is probably better than the others on the Roster. I think Hooker would be right there with him though.
I don't see Lock as a better athlete or better all around QB until after Heupel worked with him. I think all 4 QBs have strengths and weaknesses, but Bailey and Hooker certainly have an advantage at the beginning. As Heupel said, he is looking for the intangibles. I am just excited to see a QB competition where 3 QBS could legit start at almost anymore power 5 school.