I am an atheist; however, I have studied both as a pastime along with several other religions... They are lovely books as long as you cherry pick information from them.
If you actually read them, you soon realize how bat shit insane the people in the past were...
Old Testament - Incest, sending bears to attack children, child sacrifice and contradictions galore
Qur'an - From child marriage, to incest, to literally calling the prophet the deceiver of his people in his own book! It is funny
New Testament - Not as 'fun' as the other two, I guess they had an editor who called the authors out on the worst of the errors. Still, talks about love in one verse and in another says they do no bring peace but the sword...
I could go on for hours