Pogacar dominance

Hello everyone. I was wondering if some physiologist or sport scientist here could perhaps answer this question.

How is it possible in a technically very simple sport like cycling to have such a firm dominance of one individual? Since the movement is pretty simple and we are speaking about elite World top athletes with similar/comparabile weight and vo2max, how is it possible to be sooo much better than anyone? How is it possible to have such an higher watts/weight ratio? What is playing the most important role in the Power output during a race? The muscle fibers, the oxygen consumption, probably both(?) Where are the physiological limits? Is the mitochondrial capacity and or mitochondrial turnover playing a role here? Perhaps a Incredibile lactate clearance?

Appreciate any insights, the more scientific, they are, the best :)