@jrjw They don't just have more to answer for, they're bloodguilty. They are soaked in the blood of innocents that they have killed with their teachings.
If by some strange twist of fate it turns out that there is a God and that he did write the bible and the JW's were right... then that God would justly destroy them all for their crimes.
Their best hope is actually that my worldview is correct and there is no God and so the only thing that is going to destroy them is themselves.