Also Kizaru isn't being sadistic with Sentoumaru, what the hell? The opposite, he's respecting his determination to protect Vegapunk and not making light (lol) of it.
Flying straight to the dome to attack Vegapunk, while Ignoring Sentoumaru like Saturn suggested and instead having him getting ganged by bunch of vice admirals/marine fodders would have been the ultime disrespect.
Crocodile refusing to give a fight to Alabasta Royal Guards (who drank a lethal potion for the sole purpose of defeating him) was portrayed as something very wicked :
Flying straight to the dome to attack Vegapunk, while Ignoring Sentoumaru like Saturn suggested and instead having him getting ganged by bunch of vice admirals/marine fodders would have been the ultime disrespect.
Crocodile refusing to give a fight to Alabasta Royal Guards (who drank a lethal potion for the sole purpose of defeating him) was portrayed as something very wicked :