Then you are ignoring the facts... Their doubles haven't been bad at different track in the recent times, and apart from them it's just the German that achieved the unusual result...
Most importantly, everyone here has to acknowledge a fact that Yun wouldn't have won a gold medal if these Olympics have been held anywhere else. He is not really an athlete who already had a good career and the home Olympics came as a bonus. No, he was created for the home Olympics. Fact.