Parses for all players show 0%

In a recent Sartharion kill (after many wipes) with a pug, I wanted to check the logs to see what exactly was going wrong. As far as I can tell, everything is there, but for the actual kill pull, it shows all DPS and healing parses at 0%. Thinking maybe something was corrupt with my logs, I searched and found someone else’s logs of the same fight. Theirs also shows 0% parses. The numbers between them look identical, and also match what Details was showing. Is there something about the fight that makes it invalid for parses?

My logs: Warcraft Logs - Combat Analysis for Warcraft
Other logs: Warcraft Logs - Combat Analysis for Warcraft

Hey - Sarth is ranked by the amount of drakes killed. So 3D always beats 2D > 1D > 0D etc, so a 0 drake kill is ranked below every kill with any drakes, so it’s generally a 0 parse.