Minato craps on him.
Minato easily. If his original mastery isn't enough, he walks all over Sasuke with biju power equal to Naruto's. This is like Naruto with the flying thunder god technique vs Sasuke. The latter stands no chance. But even without the biju I see Minato taking this, albeit not as easily.This.
I think Sasuke could take it due to Susanoo which would be a problem for Minato.
You have a point there, a strong, complete defence presents a huge problem for regular Minato, since he has only shown rasengans (and larger rasengans), which definitely won't be enough to break through Sasuke's complete susano.
Due to susano, and with Minato's BM not allowed, I have to give the same response I did to all the Itachi vs Minato threads; either the Uchiha wins or it's a draw through the reaper death seal. It's not because Sasuke is stronger, just that it's a bad matchup.