https://www.reddit.com/r/StarWarsLeaks/comments/7kfvga/full_rey_kylo_and_snoke_scene/
They start off with Rey fighting five and Kylo fighting three. It's hard to tell what happens from there, but it seems one of the five fighting Rey goes over to fight Kylo, Rey kills one of the four now fighting Kylo, then Rey kicks away another and the scene cuts with Rey fighting three, Kylo fighting three, one guard dead, and another on the floor due to the kick.
When it comes back, it seems we have Rey fighting two with another off in the distance (unknown why due to the cut), and Kylo fighting four (presumably the one that gets up after Rey's kick goes to fight Kylo).
I think I understand where you're coming from if you say Kylo is superior, but if you look at the immediate fight before the cut, Rey's performance is pretty damn impressive.
Originally posted by MythLord
Also, Rey got up faster than Kylo after their explosive surge over Annie's lightsaber.I believe that suggests she may even eclipse Kylo in raw power, but overall the two were consistently portrayed as comparable to one-another, and that means Rey takes this.
She certainly does not eclipse him. The two are counterpoints as the film makes clear.