Homo sapiens' ability to outcompete other human species was likely a combination of both factors - skill and chance. While Homo sapiens did possess certain advantages such as larger social networks, greater genetic diversity, and possibly innovative tools like weaving and sewing needles, luck also played a role in their survival. Factors like environmental changes, disease susceptibility, and sheer coincidence could have influenced the outcome. The interplay between these elements ultimately led to Homo sapiens emerging as the dominant human species.