Yes; there needs to be some highlighting of comments that are a few standard deviations above the average, otherwise they'll get lost in the noise, particularly if they are in child threads.

As it is, I find myself commenting less to replies on my own comments, because I'm not invested in furthering my argument - I can't see how many votes those replies got, so I don't know if I need to keep arguing my case.

(That could be a good thing or a bad thing; a good thing if I'm wrong, a bad thing if I just didn't express myself well to start with.)