No, they're not equivalent. See, that requires making an assumption that I didn't about lexical nesting. They merely do the same thing in this example.

I do not know Swift's scoping rules and having read through the introductory guide and the flow control chapter I still can't tell you if the loop variable remains visible after the loop, and what it is bound to if so.

No doubt that if I sat down with a REPL or an IDE it'd hopefully be evident by example within a few seconds, but the claim was about dry-reading, not interactive experience.

I'll leave it there with an admonishment against making assumptions/declarations about the obvious-ness of something you're already familiar with.