The following is from the article, “Crucifixion – Could Jesus Have Survived” Christian Apologetics UK:
Do examples of people surviving crucifixion mean Jesus could’ve survived his crucifixion ordeal?
Well no not really because as we have noted the means of which people could be crucified could differ greatly [With or without a scourging etc], especially in the case of which Josephus describes as the context is within that of a mass crucifixion which suggests that this was unlike the process of which Jesus went through. The particular passage that details a survivor of crucifixion is once again found in the works of Josephus;
And when I was sent by Titus Caesar with Cerealins, and a thousand horsemen, to a certain village called Thecoa, in order to know whether it were a place fit for a camp, as I came back, I saw many captives crucified, and remembered three of them as my former acquaintance. I was very sorry at this in my mind, and went with tears in my eyes to Titus, and told him of them; so he immediately commanded them to be taken down, and to have the greatest care taken of them, in order to their recovery; yet two of them died under the physician’s hands, while the third recovered.
However what critics may fail to take into account is that not only was it likely that these victims were not treated to the same prolonged process that Jesus was, even with the best medical care of the time 2 of the 3 still died! So in reality it really doesn’t function as a very persuasive argument for Jesus surviving his crucifixion ordeal.
It also fails to take into account that Jesus was also stabbed in the heart [John 19:31-34] by the Roman soldiers just to make sure that they were correct in their conclusion that he was indeed dead. I also don’t rate too highly the possibility of a crucified beaten, bloodied, bruised man was going to persuade anyone that he was the saviour of the world and had overcome death? Similarly it doesn’t nothing to explain away the more short-term sociological implications of a movement that based itself on a crucified man/God in the ancient world and actually succeeding!