From 2002-2013:   The total number of competitors in both styles was roughly equal, from the world championships that I've looked at.   In Freestyle: 26 Countries produced medalists, and 15 produced champions. In Greco-Roman: 38 Countries produced medalists, and 22 produced champions.   Top ten medal-producing countries in freestyle: Russia 60 Iran 35 Georgia 24 Ukraine 23 Cuba 23 USA 21 Azerbaijan 21 Uzbekistan