They're not the same thing. The Quran purports to be the direct revelation of God's word, as spoken by Muhammed. It's one work. The Bible is certainly more complex, as the compilation of a bunch of documents of different types and times, and it's 10x as long. I haven't read the full Quran yet, but I'm told it's much less self-contradictory. Even in just the 4 Gospels, people have debated for centuries now to reconcile them into a coherent timeline of Jesus's life. Both religions are built on a whole bunch more material, written and traditional.
The contradictions in the Bible are over-stated and the simplicity of the Quran is a major weakness given how distasteful its ideas are. The fact that there is nothing to "contradict" the command to kill the infidels.... is not a good thing.
