As promised, here is the "Q" part of the Less Wrong Video Q&A with Eliezer Yudkowsky.
The Rules
1) One question per comment (to allow voting to carry more information about people's preferences).
2) Try to be as clear and concise as possible. If your question can't be condensed to a few paragraphs, you should probably ask in a separate post. Make sure you have an actual question somewhere in there (you can bold it to make it easier to scan).
3) Eliezer hasn't been subpoenaed. He will simply ignore the questions he doesn't want to answer, even if they somehow received 3^^^3 votes.
4) If you reference certain things that are online in your question, provide a link.
5) This thread will be open to questions and votes for at least 7 days. After that, it is up to Eliezer to decide when the best time to film his answers will be. [Update: Today, November 18, marks the 7th day since this thread was posted. If you haven't already done so, now would be a good time to review the questions and vote for your favorites.]
Suggestions
Don't limit yourself to things that have been mentioned on OB/LW. I expect that this will be the majority of questions, but you shouldn't feel limited to these topics. I've always found that a wide variety of topics makes a Q&A more interesting. If you're uncertain, ask anyway and let the voting sort out the wheat from the chaff.
It's okay to attempt humor (but good luck, it's a tough crowd).
If a discussion breaks out about a question (f.ex. to ask for clarifications) and the original poster decides to modify the question, the top level comment should be updated with the modified question (make it easy to find your question, don't have the latest version buried in a long thread).
Update: Eliezer's video answers to 30 questions from this thread can be found here.
Taking your question as rhetorical, with the presumed answer "no", I agree with you - of course the skills are different. However, I hear an implication (and correct me if I'm wrong) that good fiction requires a well-thought-out setting. Surely you can think of good writers who write in badly-constructed or deeply incomplete worlds.
Good fiction does not strictly require a well-built setting. A lot of fiction takes place in a setting so very like reality that the skill necessary to provide a good backdrop isn't worldbuilding, but research. Some fiction that isn't set in "the real world" still works with little to no sense of place, history, culture, or context, although this works mostly in stories that are very simple, very short, or (more typically) both. Eliezer writes speculative fiction (eliminating the first excuse), and his stories typically depend heavily on backdrop elements (eliminating the second excuse, except when he's writing fanficiton and can rely on prior reading of others' works to do this job for him).