Reaction score isnt a good indicator for anything. For example, if everybody clicks the "Disagree" button on all of your posts, you get a high reaction score. If everyone "LOVES" your posts, you get a high reaction score.
If you were to rate reaction scores, you wouldnt do it by the total number anyway. You compare the number of total posts to the reaction score. My reaction score is pretty decent because my score is about half of my total posts. You want to look at the percentages. If a guy has only 1,000 reaction score more than me, but he has 50,000 more posts than me, he isnt doing so great.
For those of you looking to get a high reaction score, here is the secret.... You make a lot of threads. Everyone reads the opening posts in every thread, so the OP tends to generate the most reactions from people. A mediocre opening post will get more "thanks" than a brilliant post on page 3.