No, I don't think one is more important than the other. In fact, in order for Musing.io to be the top Q&A platform it must provide both: good questions and good answers. Otherwise, it could potentially alienate one half of its potential user base. 

In order for Musing.io to be the top Q&A platform, there are two things that it must be able to do equally well: provide quality answers to the people who need them, and to ask intelligent questions that it's users will need to provide quality answer. Prioritizing one (either questions or answers) will just prioritize one group, while alienating the other. 

Let's consider Quora, for example. I discovered that platform years ago, not because I was looking for good questions, but because I already had a question in mind that needed an answer. So, I did a Google search and one of the results was a Quora page. I clicked the link, which was a good thing because it actually had a very good answer in it. After that, I have been  using Quora's search function to look for answers to my questions. You see, I don't answer questions in Quora. I'm simply a reader, so, for me, it was the answer that mattered.

However, consider the flipside, the person who wrote the answer that I found. He or she wouldn't have been able to write that answer, if the question wasn't asked, in the first place. So, for him or her, it was the question that was more important.  

In this sense, saying one is more important than the other will just alienate either the people who are looking for good answers or those who need good questions they can answer. 

So, for Musing.io to be the top Q&A platform, it cannot consider one more important the other. Instead, good answers and good questions must be seen as two sides of the same coin, which Musing.io need to be on top.