I think the judgement would be subjective anyway. One could invent one's own rules on how to reward all the different comments.
I am not too serious about this as I tend to follow my inner voice or intuition, completely subjective. If I somehow feel that some followers or those I am following need a bit of moral support, I would help out a little.
So, I apply Buddhism's concept of giving Dana; I would give a minimum votes for ten nice posts which have very little vote everyday. Some people on Steemit are from less developed countries, so I should help out some good posts which come my way. That's very simple for me.
Thank you @kaminchan for your comment. following your inner voice without too much of counting that makes sense. And to help others too!