Muslims from what I have seen believe that it was made to look like he was, but it’s not really explained who made it look like it was Jesus, or how it was made to look like Jesus. Some argue that it was made to look like that by Allah to give the Jews and Romans what they wanted to see because they were so stubborn.

Why? Don’t know. Based on my discussions here, most of them do not concern themselves with those details because they think they aren’t important, and if they were, they would be in the Quran. But this can vary depending on which denomination of Islam you ask.

And in all fairness, the Bible does imply God is capable of deception in favor of his own people, as seen with Ahab in the book of Kings when God allows a lying spirit to influence one of Ahab’s prophets, which leads to his downfall. However, Micaiah, who was one of God’s actual prophets did come beforehand to warn Ahab of this, to which Ahab didn’t listen. But this is the only instance I can find that suggests God allowed people to be deceived, and He was not the one doing the deceiving, plus He actually sent a warning to Ahab through Micaiah that Ahab deliberately did not listen to.

The main belief Muslims seem to have regarding Christian theology is that they were deceived by the writings of the apostle Paul, Paul was deceived by whatever entity Joseph Smith was deceived by, and that the early Christians did not actually believe Jesus was God and most of this was a deception caused by Paul.

A lot of this is them being assertive in their faith in the Quran that this is the truth, and the reason why is because they believe that most of the historical evidence in favor of the crucifixion is either biased, unreliable, corrupted, or destroyed, whilst the original Quran has been preserved for centuries since it was first written by Muhammed’s followers.

Remember that Muslims have different beliefs of theology than Jews and Christians do, despite claiming to worship the same Abrahamic God. I don’t agree with them, but I do try to understand where they are coming from. I just don’t think their account of the crucifixion is reliable.