Yeah, he was wounded. Angry and emotionally distracted. My brother saw the movie before I did, and complained about the sequence, and I said "Well, people online are saying that Kylo was wounded, so that's probably why he lost." And my brother said "Yeah, but...just watch it. It's not believable."They basically made Rey, a total novice, win a lightsaber battle against a MUCH more experienced/powerful opponent because...the Force? The script? It screamed contrivance to me.
She's shown being highly proficient with her staff. I'm sure she had to be to survive on her own.
A couple people I know say she handles the lightsaber like a staff fighting-wise. I'm not skilled enough with either to know that - but she's definitely skilled in close-quarters combat already.
Also, thought you did mention it, I think you're discounting Kylo taking a bowcaster shot (shown to propel people hit with it backwards) right around his gut.
And it wasn't. Even if she's a skilled fighter, even with Ren wounded, she shouldn't be so proficient with the Force so quickly. He should've been able to overpower her like he did when he slammed her into the tree. But she is shown as being able to overpower HIM by pulling the lightsaber to her, and then turning the fight around? With zero training? And a mind trick with zero training?
"Yer a wizard, Harry!"
"The wand chooses the wizard, Mr. Potter."
I kept thinking of that after watching the movie.