In their ability to help the White Sox in 2022, Sheets offers more, IMO.
I see the window as 2022-2024 so I couldn't really care less about what Vaughn might do in 2026.
The Sox can't afford to wait on Vaughn to develop. They're better off using him as a chip for someone like Ketel Marte.
Don't give him away, by all means, and I do realize his potential is greater than Sheets.
But I think his value to the Sox competitive window is as a trade piece.