There's downtime not counted there. You can tell because the DPS have wildly different durations, and your (I'm guessing) WHM's duration was 20 seconds longer than the next highest player. If your settings counted downtime, every player would all be within 1-2 seconds apart from each other, IE from the start of the fight to the death of Nael. As I tried explaining before, if you have not changed the settings from default, it WILL NOT count downtime properly, even if you merge the sections. I've seen people with merges who got DPS quite a bit higher than they should have, then after they changed their settings were quite a bit lower than their merged fight in one total check.