Does the award for the greatest evil go to Satan or God?

[Greatest I am]

Actually, the idea of "first and last" does carry the idea of "best and worst." This meaning was understood by folks in the first century. I was reading some literature from that time period called The Thunder, Perfect Mind in the Nag Hammadi library. It interprets "first and last" the way DL suggested:

For I am the first and the last.
I am the honored one and the scorned one.
I am the whore and the holy one.
I am the wife and the virgin.
I am the mother and the daughter.
I am the members of my mother.
I am the barren one and many are her sons.
I am she whose wedding is great, and I have not taken a husband.
I am the midwife and she who does not bear.
I am the solace of my labor pains.
I am the bride and the bridegroom, and it is my husband who begot me.
I am the mother of my father and the sister of my husband and he is my offspring.
I am the slave of him who prepared me.
I am the ruler of my offspring.
But he is the one who begot me before the time on a birthday.
And he is my offspring in (due) time, and my power is from him.
I am the staff of his power in his youth, and he is the rod of my old age.
And whatever he wills happens to me.
I am the silence that is incomprehensible and the idea whose remembrance is frequent.
I am the voice whose sound is manifold and the word whose appearance is multiple.
I am the utterance of my name.

I find the play of opposites quite fascinating. Very Taoist. It also shed's light on Jesus' statement that "the last shall be first, and the first last." He often played with opposites like that. For example, you must die to live, you must humble yourself to be exalted, etc. And this relates directly to Christ himself who said he was the "first and last" because he had to be humbled to the point of an ignoble death before he could be exalted above every other name.

Philippians 2:8 And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross. 9 Wherefore God also hath highly exalted him, and given him a name which is above every name:

Folks need to drop all the dogmas they've learned from institutional religion and read the Bible with new eyes.

I was going to link to where some speak of just what to them Alpha and Omega mean but you have done my work for me.

Note in your examples how good and evil can be applied to the opposites and how they are linked to Alpha and Omega.

If God is the judge of those opposites, he must be the epitome of each category and that is what your quote tells me.

Regards
DL