In what ways has Andre Ward's Olympic Gold medal benefited his career?

He was the only US boxer in 2004 to win an Olympic Gold medal, but it's 2011 now and not many people know who he is. Why is that? It didn't take too long for guys like Oscar DLH or Sugar Ray Leonard. Did he sign with the wrong promoter? Would he be more popular if say, he was a smaller guy, around welterweight. Top Rank signs one fighter from the Olympics every Olympics, In 2008 they signed Korobov, who did they sign in 2004? Do Gold medals in Olympic boxing even mean much anymore?