Ask HN: Why is there no up-vote count shown next to comments

I will like to know why their are no upvotes count displayed next to comments even though it is obvious that they are counted, I do not know about you but i feel that this feature will enable one quickly filter highly relevant, enlightening and worthwhile comments from general and normal comments particularly on very long threads that tend to test a readers patience. I also do understand the mantra that all comment's have a certain sense in them, but come on not all comments are equal in this case due to a lot of variables like perhaps the experience and qualification of a writer in relation to the subject matter being discussed.