Bismillah
Just curious...
I don't understand how the pope can feel justified in saying this anyway. Christianity believes that foretellings of Jesus' coming is all throughout the Old Testament. So Jesus is no bring anything "new" per se but just fulfilling a message.
Also, Catholicism is rife with polytheism (They consider it praying to saints but "a rose by any other name..."). Their saints have just replaced the pantheon of Roman and Greek theisms. There are even patron saints. How can a parallel between Greek and Roman polytheism not be drawn?
I mention this only to point out the fallacy of someone saying that one has bad breath when they are covered in... let's just say filth.
As for if the Prophet brought anything new... I listed one and there have been discussions on the board about the changes that he brought about. I am being brief because of my lack of time. I ask others to join in to help. If they do not then I will compile some when I have more time to spare.