The two can't be compared since we'd need an end point and a starting point.
+Sasuke has Kakashi's training and his previous years of Uchiha training behind him Sarada doesn't.
That's the only contribution your getting out of me for this thread.
While true Sarada should already know Chakra Enhanced Strength, which is something Sasuke hasn’t encountered at this point. No Sharingan either and the point of reference is land of waves. For Sasuke this would be the Zabuza and Haku arc before the Sharingan meaning he has barely been trained in chakra control, So no precognition to help dodge that brute force of chakra. He should have Katon but Raiton wasn’t learned until second part of Chunin Exams so that with Sasuke’s natural Taijutsu talent gives him an edge.
Sarada by her land of waves arc has no fire and since no Sharingan, no lightning or genjutsu either. She does have her Taijutsu and shiriken techniques but that’s about it.
As OP stated, it would be a close fight,
but I give it to Sasuke as he was a serious take no prisoner type opponent while Sarada might pull her punches. One was raised in an era of tension and war (Sasuke) so his training even at this point is far more rigorous than Sarada’s who’s been training with no real goal other than to be Hokage one day.
But it could go either way in my opinion.