The dark side of the force works on honing your emotions, kylo is comply conflicted after killing Han making that not possible. The light side of the force works ok staying calm and collected, kylo isn’t that. Of corse she out force pulled him.
She also beat him while injured and while he was bleeding out as we can see his blood on the snow. The only thing rey really does out of the realm of belief is the mind trick as even luke force pulled his saber with zero training in empire.
While not shown in the movie rey has atleast some sort of flight training from sims. You also have to keep in mind that every thing gets upped in its effect to make it look more impressive unless you think young obiwan and aniken were better saber fighters then old obiwan and Vader just because there fight was flashier.