I believe that the second when the screenshot was taken is not a reference to the second when the boss is dead.
Okay, I can agree with this because I understand not everyone took a screenshot at the exact second of the kill.
In determining a tie breaker, specifically between CKN and Chosen for rank 6 of the Writhing Horror, we both supply our kills in seconds. Chosen's with the exact second of the lore, ours with the time stamped chat of the Writhing Horror's death in the chat box. (The screenshot was taken 22 seconds after) =/
If you choose not to alter it, that's fine, it's your thread. But it is proven which kill took place first.