Injuring an eye
really isn't all that in this verse lmao, especially when we don't even know the nature of how that happened. It could've been an off-guard hit. You gotta realize, Code's dumb as a brick, and Sasuke's one of the most skilled Shinobi in history. It's not hard for me to imagine him being able to create openings against him or "survive" for a bit through sheer skill.
Not to mention, it's
not the first time that Sasuke's sword has been shown to
have the capacity to injure someone objectively leagues above him in raw stats.
So, personally, I would not use this for scaling.