In Hard Mode the warden inflicts 22. 5 hearts per stroke and 7 hearts with Sonic howling to the player while he inflicts only 15 hearts per stroke and 5 hearts with Sonic howling to entities.

For example theenderman has 20 hearts and should be killed in one blow by the warden in hard mode because he would inflict 22. 5 hearts on him, instead the warden inflicts 15 hearts and 5 by screaming.