How can Sasuke not surpass him. Sasuke is currently between the ages of 15-17 and he has already showed this much potential in his fight against Madara. And lets look at Madara.... The guy has lived his full lifetime, had as much battle experience the any ninja could ever have, and now he has been resurrected in his prime. To be perfectly honest, if you compare the Madara who is between the age of 15-17 to the current Sasuke, I would say that Sasuke would destroy him, even without the Sages powers!