I think there is something that can be said in this direction: I think it's largely circumstances beyond his control that made him that way. His own childhood was stolen too. His victims remain confused to this day because they also remember him tenderly. From what Wade and Safechuck said, it seems that he never forced himself on them. That's rather different behavior to sadistic 'pedophiles' who are into it primarily for the power it gives them to torture the innocent. If Jackson was a pedophile, then he was not a pedo-criminal, a term used in France to distinguish the really malevolent sickos.
So I don't think he was a psychopath, not a born one anyway.
That's the direction I'm leaning towards as well at this point. Not all psychopaths are pedophiles (in fact, I think a minority are, if I'm remembering a study I read years ago correctly), and I don't think all pedophiles are psychopaths either. I'm guessing the "pedo-criminals" are probably both. But for the pedophiles who aren't technically psychopaths, I think maybe we could classify as characteropaths. In addition to whatever has deformed their character (trauma, exposure to severe psychopathology as children?), the very fact that they're sexually aroused by children - and usually only children - must really screw up their psyches on top of that, and perhaps even cause them to develop some very psychopathic strategies of manipulation, combined with an extreme degree of self-delusion. Perhaps MJ was so good at convincing others because he was so good at convincing himself? I'm not sure what is worse: abusing children out of a sense of sadistic domination, or abusing children while being convinced it is actually good...