Yep.
One other thing that deserves to be mentioned is that Kefka isn't an inherently evil being. Sure, he apparently lacks any capacity for moral judgment (or just doesn't care), but he wasn't like that before he got the faulty Magitek infusion Gestahl had him receive. It could be argued that the blame for all the events of FFVI can be placed squarely on the shoulders of Gestahl, since the hunting of the Espers wouldn't have happened without him and Kefka wouldn't have turned into what he turned into if Gestahl hadn't wanted to build a world-conquering empire.
Luca Blight has issues with his father, but he has no excuse such as insanity to explain away his apparent lack of moral judgment (at least that I'm aware of). He's just evil, through and through.