So firstly I am aware that there would be differences between the two, I but I am showing nearly a 4k difference which seems crazily high.
So this occurred on Heroic Conclave, I was tanking Pa’ku who we killed 3rd since pa’ku makes up 70% of my damage and he was healed to full twice I feel like logs aren’t accounting that damage which seems wrong. Wowanalyser also shows the same damage as Details.