How are we different and what gave us the advantage over extinct types of humans like the Neanderthals?

In parallel with modern man (Homo sapiens), there were other, extinct types of humans with whom we lived side by side, such as Neanderthals and the recently discovered  Denisovans of Siberia. Yet only Homo sapiens survived. What was it in our genetic makeup that gave us the advantage?

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/v...