yeah, you missed how that guy has probably over 30k attack. I have a similar build, but since my attack is very low (below 23k) I take about 3 minutes to kill that guy.
He also seems to be using the new Inquisitor Vaivora mace ichor since his combo starts with 3x God Smash, which is used to boost the damage of Ripper by 30%, and Druid boosts critical damage with Sterea Troph, allowing him to hit 10m cap with Ripper.
You should note that Inquisitors God Smash is complete garbage without the new Vaivora mace, and it’s just there wasting time if you have other damage skills you could use without it.
And, as stated above, Inquisitor has the inherent problem of having an orientation on burst damage, meaning there is no stable DPS since the skill cooldown times are so high on most skills.
It can burst down quickly with the right equipment and attack value and classes, but if you don’t kill, you have a long downtime ahead of you.