Didn't he kill those two cops one time in S1 when Skye/Daisy was trying to escape him after he kidnapped her?
It's still not the same thing, even if they are both extremely deluded. I mean I don't think Kilgrave takes pleasure in hurting random people either, he's just extremely self centered but he's still of a different magnitude. Ward feels some remorse, which is far more than Kilgrave ever does.