The movie name is formed from DNA letters on purpose.
Anyway, the main difference that distingueshes sapiens is the poorly grown face, and there is no known reason why people should evolve an ungrown face.
What do you mean by poorly grown? A robust neanderthal skull can handle injuries from megafauna better. Our better strategy (potentially through more developed language), finer weapons, and slightly better ballistic aim combined to make us the better hunter. The evolutionary pressure for robust facial structure was not there - we evolved in a hot environment where a more lithe body was better adapted to long-distance persistence hunting.
Your choice of "poorly grown" reveals that your mental model of evolution and development is poorly grown. In what way is it "poorly grown" or "ungrown" except by your standards of what a "human" should look like, which is only based on what modern humans _do_ look like?
