If you mean that they might both believe in God and not in the fairy tale myth of The Big Bang and Evolution, you might be right on that point. 
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Atheists and God-believers both believe in "something" "in the beginning." 
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It's just that Atheists want to insist that "out of a big explosion of otherwise lifeless and useless stuff/junk,....eventually.....there came about, by pure accident, everything we see, including all the galaxies, the stars, the planets, and all life that exists to some "universal set of laws" that also arose purely by accident.
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I start with a living, Intelligent, Creative God.....who created the complexities of life (including man) far easier and with more Creativity/Intelligence than man created a 2018 car....a car, by the way, which cannot reproduce itself the way God-created life can.