Perhaps the following might help shed some light on why Muslims do not view the alleged crucifixion of Prophet Isa (pbuh) as a particularly humongous event the way Christians do:
From this story, we can see that the Lord is not averse to protecting and saving His Messengers from being harmed by their mortal enemies and I suspect that the method of escape of Prophet Muhammad (pbuh) when he walked past the assassins is not dissimilar to the method of escape of Prophet Isa (pbuh) during the alleged crucifixion event… and Allah knows best
This shows you how little you know about Christian Faith ; if Christ was not Crucified and Resurected then he was a liar and not even a prophet of God. You believe he was a Prophet of God so when he prophesies his own death he must Die.
The fact that Christ had a choice is always clear and in the end he accepts his task. At what point do you believe he gets switched; in the Garden when he suffered so much he sweated blood; at his trials where he was humiliated ; when he had a crown of thorns embedded in his head; when he was scourged ( something that sometimes killed lesser men ); when he carried his cross bleeding to death and pained in every way; when they nailed him to the Cross; at the moment of his death.
Prophet Muhammad (pbuh)
Christ prophethood and messiahship is proved by His miracles ; by His prophesies and by the uncorrupted scripture of the Torah. Even the Jews will say Christ meets many of the criteria for their Messiah just not all ( He will satisfy the rest on his second coming ). Find a practicing Christian or Jew who will say that there are some verses in their books that they think could be aplied to Mohammed. Apart from those that talk of False Prophets and satan appearing as an angel of light
Muhammed has no miracles ; no prophesies worth anything and no Justification from previous Scripture because he says it is corrupted so to use it would be a corrupted justification. He cannot use the Quran as the Quran stands or Falls on Mohammed not the other way round ( if Mohammed cannot prove himself a prophet then we cannot take the Quran as truth. )
Please spend some time to learn of the true Christ and not a pale imitation in case He should Shine so bright that Muhammed would shrink in his brightness.

Christ reaches out to you and wants you to share in His Kingdom and in His love.
Take a chance and I guarrantee you He wont dissappoint you.
Also Mary His Mother could also be trying to reach our muslim brothers and sisters as it may be no coincidence that she chose to appear at Fatima.
And also Soufaniah could if approved be the next stage in her reaching out to our muslim brothers and sisters for her Son Christ. Have you read of any of these events?
soufanieh.com/ENGLISH/eravaz.htm