I think that trying to interpret Old Testament mythology as literal fact will get you into all sorts of theological nonsense.
Even as metaphor, say we make one day = billions of years, it doesn't make much sense to make a mathematical model after it. I'm not sure it would make any theological or philosophical point, and would neither validate nor refute any religious belief. It's like asking how Orpheus survived without food or water during his descent to the underworld and back...it removes the story of its meaning.
Now, saying that the vastness of the cosmos shames most religious conceptions of the universe, with Earth and Man as their priciple players, is an entirely valid statement, though obviously just an opinion.
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On a literal level though, yes the universe is more complex. In terms of raw genetic informaiton, there's other species alone that are more complex than humans (we're just ahead of the others cognitively), so you really don't even have to leave the planet to answer the question.