Not shocking. Muslims believe Jesus was an Apostle, second only to Muhammad. The problem isn't that they don't know about Jesus - but that their entire understanding of who God is is fundamentally defective. They believe God is fundamentally Unity - so to have Jesus Christ be God is grossly polytheistic.
True. One of the training sessions that I conduct for 44TRAINING in churches is called Jesus in the Quran. The Quranic view of Jesus is different than the biblical view of Jesus. Although he is considered to be a great prophet by Muslims, they reject his deity and his crucifixion and resurrection. In other words, Islam is diametrically opposed to the core central teachings of Christianity. The two religions are mutually exclusive.
However, even as Jesus is presented in the Quran, He is unique than all the other prophets. His titles and names are unique and his miricles are unique. For the thinking Muslim who reads the Quran, they can see that there is something different about Jesus. Some Muslims who have converted to Christianity testify that reading about Jesus in the Quran got them thinking about who Jesus really might be. This drives them to find a Bible where they then do discover that He is the Way and the Truth and the Life.