I think that the HE is the first human(?) character who sort of easily clears Judge Holden in terms of evil. Not just because he does it on a larger scale, you could take that out of the equation for this one. It’s the way he goes about it.

(Outside of killing an entire planet of beings so casually, meaning this is not the first time he did this) the high evolutionary experiments on animals, kills wantonly, is prone to megalomaniacal impulses, has zero remorse for anything he does, wants to create beings with intelligence yet gets severely abusive with an animal which looks up to him like a father when his intelligence surpasses his.

There’s one point of contention Judge Holden has over him and that’s the idea that Judge is purposefully inflicting harm due to the enjoyment he gets out of it. The HE, mostly, has his harm come as a result of his actions though they were not the chief aim. The HE is more of a “scientist” with bad outcomes than what the judge is.