lol, It's a play on how people look at good and evil. Lucifael is evil in that he manipulated everything to achieve what he chose. Although he did evil things in that manner, he was still good, in that the end result benefited everyone else. He did many "bad" things, and many "evil" thing, but he was still good.

Alexiel, well, that's another story. Ultimately, she was good, the purest of angels that not even Adam Kadamon could match in purity. I'll explain that one later, but Alexiel killed many, much like Lucifael, and she went against everything she and everyone around her were raised to believe. Unlike Lucifael, she manipulated only when absolutely needed, such as when she manipulated Lucifael into serving her in exchange for his memory. As Setsuna, she was mostly self-centered, but was helped by Sara, Lucifael, Katou, and everyone else, and she overcame that, helping them and many others in ways she wouldn't have done so as Alexiel.

When you look at everything in a complete manner, both Alexiel and Lucifael were good, even if not in a good way.

As for what I said about Adam Kadamon not being as pue as Alexiel, think about it, Alexiel and Rociel are the children of Adam Kadamon, two opposites of one whole. If Rociel can be so dark while so pure, wouldn't you also mean Adam Kadamon is just as dark? Alexiel, on the other hand, never took the role of the dark warrior, she alway benefited the whole, even if in a dark way. How can someone that is part dark be purer than someone that isn't dark at all, while that second person is created of the original?

Alexiel is the purer side of Adam Kadamon, Rociel is the darker side.

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