I don't think "accuracy" is going to be the defining feature of which chatbot succeeds. People just aren't using them for tasks where a 3-5 point difference makes the grade, because the difference between 67 and 100 is more important than the difference between 64 and 67. If you can integrate a relatively speedy bot somewhere people can use it conveniently that'll get more usage than a slightly more factual response you have to tab out to.