Apr 29, 2019, 21:2404/29/19
Crit damage increases your regular damage by that amount whenever you crit. So a crit with crit damage of 100% would deal 200% damage when you crit (100% base + 100% statted).
You can have more than 100% crit damage and it will still deal more. The previous poster got confused by your original question and he was right, increasing crit rate over 100% will do nothing more for you.