I see either Sasuke winning or draw. The whole warping Susano'o argument won't work as Minato needs to touch it or get his chakra to touch it to warp it. Sasuke can light up Susano'o and even coat it with spikes made of black flames so good luck trying to touch it. Minato has no way of actually hurting Sasuke, as Rasengan's Kunai slashes, punches and kicks will do nothing to even the weakest form of Susano'o. Food Cart Destroyer will get tanked with Susano'o then Gamabunta will either get controlled or burned down. Hiraishin is easy to counter. Simply swamp the battlefield in flames leaving Minato with no choice but to run away, or Sasuke can burn all the Hiraishin kunai by sniping them individually. I don't know why people are making an argument out of Gamarinsho. Minato is not a sage mode user and he doesn't even have knowledge of the genjutsu. Not even Jiraiya knew about it. In the end I see Sasuke cornering Minato and leaving Minato with one of two choices. Run away or use Shiki fujin to kill them both resulting in a draw. Sasuke can get a clean cut win if he manages to trick Minato with a genjutsu but that is the only way I see him winning. Minato straight up cannot touch Sasuke, and with Sasuke's current knowledge of Hiraishin, Sasuke is in a favorable position.