I think people find the separation of the Stack Exchange network a little complicated. On Quora, you can make a new topic in seconds. On Stack Exchange opening

I think people find the separation of the Stack Exchange network a little complicated. On Quora, you can make a new topic in seconds. On Stack Exchange opening up a newer area of discussion isn't so instant. But yes, Stack Exchange sites easily beat Quora in the quality of answers where Stack Exchange has an established site, it's just that Quora has a wider range of topics.