Easy to claim Sasuke wins but how? He can't touch Minato when Minato can. You would say Susanoo enton? Minato can throw kunais around Sasuke, which will limit his mobility since if he jumps over the kunai or cross through them it will leave him open from the underground Susanoo weakness.
If Sasuke tries long range attack, he kills himself because of S/T barrier. The markings never disappear, so puting kunais on fire won't change a thing especially since fire has never shown the capacity to burn metals like kunais before. If he stays immobile and try to push the kunais around him, Minato could throw another one(or others) infused with his chakra in order to connect with the Susanoo armour.
While connected he could simply warp it away since latest chapter proved once again the Susanoo armour isn't physically connected to Sasuke. Leaving him then open for an attack coming from a surrounding left hiraishin-kunai. Whether Minato decides to go by himself or let his clone do the job will depend on him