This particular screenshot seems highly suspicious to me. I can't even check his hotbars because they are off the screenshot. Also you would also think someone with that high of a hit would have higher dps/overall damage.
Also the dropbox linked images don't work.
Im not posting my UI or keybindings because i am a competative player and consider my binding setup personal to my playstyle.
I regularly hit 10k+ hits. This was just insane though. It was about 3 weeks ago. Without boring the detail. It was pre-setup and communicated on TS when i was going to hit this guy. So i had most class buffs on damage active.