One of the differences between the Bible the Quran and Hadiths is prophecy.
Biblically through the ages God has given important, lifesaving messages through His prophets. Prophets were/are ordinary people whom God chose/chooses to represent Him by receiving His divine messages and delivering them faithfully to His people.
Biblically prophets do not express their own private opinions in spiritual matters. Their thoughts come from God, through the Holy Spirit. The Bible tells us, "Prophecy never came by the will of man, but holy men of God spoke as they were moved by the Holy Spirit” (2 Peter 1:21).
In the Bible God communicated with prophets through dreams, visions or face to face, "If there is a prophet among you, I, the Lord, make Myself known to him in a vision; I speak to him in a dream. ... I speak with him face to face” (Numbers 12:6, 8).
In the Bible there are many prophecies (almost 2000) and they were/are given for different reasons such as to warn God's people of potential consequences if they didn't turn back to God and obey Him, to remind people what it meant to live godly lives, to help us understand future events and to prepare for them, to give hope.
I'm not well versed in the Quran or the Hadiths nor do I want or intend to be, but I know Islam says Mohammed received his revelations by Gabriel from god who appeared to him in a cave.
In the Bible the angel Gabriel had a calming influence on those he appeared to. He helped relieve their fears because he could see they were troubled when they saw him. The angel Gabriel told Zacharias, "Do not be afraid, Zacharias, for your prayer is heard; and your wife Elizabeth will bear you a son, and you shall call his name John" (Luke 1:13). Gabriel also told Mary, "Do not be afraid, Mary, for you have found favor with God" (Luke 1:30).
However in Mohammed's case "Gabriel" squeezed him so tight he could not breathe. After encounters with this Gabriel, Mohammed would be left depressed and suicidal. Certainly that is not calm at all.
There also is not much prophecy in Islamic writings compared to the Bible and yet not all of it is fulfilled or comes true. In the Bible a prophet's predictions have to be fulfilled and come to pass, "But the prophet who presumes to speak a word in My name, which I have not commanded him to speak, or who speaks in the name of other gods, that prophet shall die.’ And if you say in your heart, ‘How shall we know the word which the Lord has not spoken?’— when a prophet speaks in the name of the Lord, if the thing does not happen or come to pass, that is the thing which the Lord has not spoken; the prophet has spoken it presumptuously; you shall not be afraid of him" (Deuteronomy 18:20–22).
Islamic writings completely contradict the Bible on every theological point which means the god of Islam is not the same God of Christianity. One is the true God and one isn't.