Compareing stuff somtimes only catches one of the logs

Warcraft Logs
1

https://www.warcraftlogs.com/reports/compare/hXk3P86FfRTCB1DA/zbxyVR9nQJc412vY#type=damage-done&fight=21,22&by=target

if I check for damage done on “Dread Infernal” I can only see one of the logs. Would guess there are some logic that is not recognized when you are comparing the same fight.