The problem is that "bounce" is a broken metric. It implies that people "bounced away" from your site very quickly because they didn't find it engaging. But the standard definition of a bounce is simply a single pageview visit. It needs redefining, because there are plenty of single pageview visits that do actually engage the reader. e.g. reading this article - I bet a lot of you read it but didn't read any other articles on the site. GA would probably report 90% bounce rate for these visits, but Clicky would be more like 20-30%, which is much more accurate measurement of how many people are actually engaging with the site.