I'd say closer to Davis than McKinnie, and its entirely possible he's not as good as either. It blows my mind that some feel he's worth a top-10 pick. So many issues with his game, he basically needs to be taught from the ground up how to pass block.
I wouldn't take him in round 1 if I ran a team. If I really wanted an OT, I'd take Josh Jones over him, in addition to the big-3.