I didn't know I was being teased... :
Can I rephrase that question to make sure I'm understanding it clearly? You are asking, "Does one World gold and one Olympic gold make YuNa the greatest or just awesome?", right? Tara Lipinski is pretty awesome in my book.
And so, to answer that question, it means that YuNa is awesome.
For that matter, 10 World golds and 3 Olympic golds wouldn't necessarily make someone the greatest, either. It's all about the performances, the contexts, and the competitors, to me. In that order. And even so, I don't think it's necessary to think in terms of who's the greatest or the best. Not in this multifaceted sport.
I would add Irina Rodnina, the only other person I can think of besides Sonja Henie with 10 world golds and 3 Olympic golds. (This is just the obsessive-compulsive copyeditor in me!)
I agree with you that you can't quantify greatness in that way, Prettykeys. Especially in the case of YuNa, I'd say that it isn't the medal haul that makes her awesome: it's the quality of her skating itself. I'm no kind of expert on looking at jumps and knowing what I'm seeing. I'm here for the music. But even clueless me can see that her jumps are in a class by themselves in size--in sheer bounty! In that regard she's like Ito, who has just one Worlds and an Olympic silver. Midori is in rare air nonetheless, and very few people would disagree with those of us who say so. Even if YuNa does nothing else in eligible skating (Perish the thought! I want to see more, more! Years more!), she would be among the greats of all time.
It's fun to joke about how tiresome those of us are who are uberfans of one skater or another. Always praising them, always bringing them up in conversation. (Go, Michelle! Now and forever.) But I have to say that there are some skaters who by their very nature deserve to have uberfans. YuNa is definitely such a skater. That's why I excuse people who burble over her gifts (unless they snipe at other skaters, which is really unfortunate). They have a right to. She's astonishing, like Nadia Comaneci in gymnastics or Gretzky in ice hockey. Ironically, or poetically, Mao is also someone who deserves uberfans. And I suspect that in the way we still talk admiringly of Midori Ito, in fifteen years we'll still be talking of Mao and YuNa. They're that good, and that rare.