She is an untrained and unrefined lightsaber duelist, she really isn't a good measure, nor is it by any means a good showing for Ren.
Regardless, I'll place my two cents in. Man it's been about two years since I've debated on a Star Wars thread outside of comic vine.
While parrying lightsaber strikes in an injured state is impressive, losing to an individual who had never utilized a lightsaber before is still a rather poor showing. While Kylo Ren has the advantage as a force practitioner, I consider one's dueling prowess to hold a greater significance between battles regarding force sensitives generally. ESB Luke has impressed me considerably more as a duelist, the ESB novelization makes it clear that Luke had performed quite well against Vader as a duelist, and had even impressed the Sith Lord regardless of Vader holding back. Now, while I find Luke being capable of telekinetically lifting his X-Wing from the thick swamp of Dagobah to be more impressive than anything Ren has done, it doesn't translate quite well into a battle as Luke did require some time and focus in order to lift it, and Kylo Ren still possesses more refinement and control. I would say that Luke takes the majority 6/10. It's certainly close.