There are no bandwagons and feedback loops to contend with in the comments. It's a much more level playing field. If they add a top comments feature, I'm sure we'd end up seeing the same thing as we do with posts. A handful of eye popping rewards at the top, and the majority of posts languishing at the bottom without recognition.
Comments are where it's at.
I just figured that his out today. I have struggled to get anyone to notice post but comments have had my two largest payouts.