regular can sugar is almost entirely SUCROSE which your body breaks down into glucose and fructose. its not dumping a bunch of fructose into your body.
furthermore, we have sensors in our body to inhibit sugar craving in the presence of glucose or sucrose. we have no such sensor for fructose. so even if you did have 50% pure fructose in cane sugar, you would drink less real sugar coke because you'd feel satisfied after drinking a much smaller amount than those HFCS abominations.