No, you're not wrong. I think as far as draft pundits go his mocks are right at the top of the bell curve. He's not the worst and he's not the best. The draft really is a crapshoot, some teams take guys off the board for reasons others don't mind and when trades are made it throws everything completely out of whack.
I think he basis his mock around team needs, whereas some base their mocks around BPA and or scheme fit.