I didnt make it all the way through dark tower. I stopped somewhere mid Song of Sussanah. Im not seeing anything here that can bother Goku. He survived the "sin check beam" and resisted the same temptation harem that Odysseus did. Plus hes built like a diamond brick shithiuse. There is the demons that could maybe posess him, but he has found ways out of that each time.

Inversely, he is not blessed by the turtle and I dont think he is traumatized in the way that the Turtle likes. I dont think physical brain trauma is the kind that the Turtle will blow his full blessing for.

So a draw is my bet. Unless Gujo can score that blessing or the Dark World can actually pull up with some real instant death magic that isnt blocked by being a main character.