Rock Lee wins both scenarios. I can argue for different versions of Lee in part 1.
Version 1 Lee:
Lee is still superior Taijutsu wise...Sasuke can react to him and has the Sharingan to anticipate him but that's not to say Lee can't easily evade Sasuke running at him with Chidori as well as Sasuke was attacking him when Naruto could create a clone, prep Rasengan and physically throw his clone at Sasuke while he was running at him
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. Sasuke's limit is twice a day
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, not to mention the fact that Sasuke in some scenarios went ahead to use a hand seal
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,
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and in other scenarios where we never saw the hand seals, there were panels (of the past) in between preventing us from seeing whether or not he did used the seals. Either way, it goes to show his level of experience with the Jutsu in part 1 and he said he had to create an opening in order to use this
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That's never going to pulled up against Lee who occupies him in a CQC fight and if Sasuke tries hitting Lee with it, :lol Lee just reacts easily by evading but the truth is, Sasuke won't be pulling that in a CQC. At the end of the day, Lee's stamina is superior and would keep him occupied most times considering Sasuke's stamina was affected upon running a few times and attacking Gaara. Add the fact that his usage of the Sharingan also has its own side effect since combining it with other Jutsus combust and expand all his body's chakra at once, then this drains him a bit more in his fight with Lee. I give the fight to Lee because if you believe Lee takes scenario 2, then you should believe Lee takes scenario 1 since Chidori plays no role when it comes to hitting Lee in a CQC. Part 1 Sasuke won't be using it in a CQC against Lee. Even the likes of Kakashi had to restrain Zabuza with his dogs to hit him and in part 2, he had others use the mind body switching technique and Ensui's shadow possession to immobilize Zabuza who was distracted
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and yet, Haku still reacted to this technique on two occasions. Says a lot about Sasuke and Lee here in terms of this technique. Rock Lee wins both scenarios. I can argue for Lee on different occasions in part 1.
Version 2 Lee is the Lee that returned from the hospital. He has his sake and you know that automatically means Sasuke stand no chance of winning since his Sharingan won't be reading unpredictable movements. Both Scenario easily go to Lee in this case.