seriously though - the only people who could say lockyer is a better 5/8th than a fullback are the people that never saw him play fullback.
when he was at fullback, if he didnt play in an origin we lost - it was as simple as that. at 5/8th, not so much. sure thats got to do with thurston/prince, but its more the fact that he was a better player back then. he was the one making breaks, stopping tries, setting up tries through his pace/footwork/passing - not the one who is a turnstile in defence, or couldnt break the line to save his life.