The history underneath it says the same thing. Crucifixion was not a Roman invention. The earliest records trace it to the Persians. King Darius the First is reported to have crucified thousands of his enemies around the year 519 before Christ, and the practice spread through the Assyrians, the Carthaginians, and the Greeks before Rome ever touched it. By the time of Jesus, Rome had taken this ancient horror and refined it into the most shameful and agonizing public death a person could suffer, reserved for slaves, rebels, and enemies of the state, a death designed to strip a human being of every shred of dignity while the world walked past and watched.
Here is the detail the counterfeit systems rush past, and it is the one I would build a case on. The religious leaders who wanted Jesus dead could not lawfully crucify Him themselves. Jewish law recognized only four forms of execution: stoning, burning, strangulation, and beheading. Crucifixion was foreign to the law of Moses entirely, and when Israel hung a body on a tree, it was after the person was already dead, as a public sign of a curse, never as the means of killing. That is why the leaders had to bring Jesus to Pilate. They had no legal power to put anyone to death under Rome, and even if they had, their own law gave them no way to crucify.
The cross required Roman hands. That is not a historical footnote. That is prophecy unfolding in real time. Centuries earlier the Scriptures had said they would pierce His hands and His feet, in Psalm 22, written long before crucifixion was practiced by anyone Israel knew. The Messiah had to die a death Israel could not carry out and only a pagan empire could, so that the words spoken by the prophets would be fulfilled exactly. God wove the timing of empires and the limits of the law together so His Son would die in the precise manner He had foretold. The very fact that they could not do it themselves is part of the proof.