Personally I think,Dishonored had the best gameplay,assassinations and mission design as well as variety.But the Knife Of Dunwall had the best story telling,narrative and plot twist.In terms of characterisation,I liked Daud as a character but I liked Corvo's outfit,his weapons,gear and swords,his mask and his powers more.And I liked that there was a large number of blueprint upgrades in the original game thanks to Piero's talent.The 'blink' and 'summon assassins' in Knife of dunwall was remarkably awesome though.Dishonored had more action focused elements and Knife of dunwall had more stealth elements.I think both are equally great.I don't know about Brigmore Witches as I hadn't played it yet.Hope the next game has more upgrades and powers,more assassinations,more variety and more options.