Nowadays islam looks bad because of american policies in Afghanistan where she destroyed a whole civilised nation amd drag them to stone age for wining the cold war with soviet union and to achieve that she created islamist extrimists (later called terorists) and praised them as heroes at the time as you can see in Rambo3 movie. And after destroying the soviet union by the hands of Afghans she dumped them and left the country in ruins and civil war. Alqaeda and taliban all emerged from there.

Also as already noted, the miracles were not doing of Jesus himself, it was with god's permission. Mohammed also has miracles such as His ascension.

Also all prophets generally have abilities that are popular at their times. David could render iron with his hands, Jesus had magic.

I found this a very interesting and enlightening thread - thanks for posting and the civil discussion.